Contents of /trunk/mkinitrd-magellan/busybox/editors/vi.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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File size: 108845 byte(s)
Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 108845 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * tiny vi.c: A small 'vi' clone |
4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com> |
5 | * |
6 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
7 | */ |
8 | |
9 | /* |
10 | * Things To Do: |
11 | * EXINIT |
12 | * $HOME/.exrc and ./.exrc |
13 | * add magic to search /foo.*bar |
14 | * add :help command |
15 | * :map macros |
16 | * if mark[] values were line numbers rather than pointers |
17 | * it would be easier to change the mark when add/delete lines |
18 | * More intelligence in refresh() |
19 | * ":r !cmd" and "!cmd" to filter text through an external command |
20 | * A true "undo" facility |
21 | * An "ex" line oriented mode- maybe using "cmdedit" |
22 | */ |
23 | |
24 | #include "libbb.h" |
25 | |
26 | /* the CRASHME code is unmaintained, and doesn't currently build */ |
27 | #define ENABLE_FEATURE_VI_CRASHME 0 |
28 | |
29 | |
30 | #if ENABLE_LOCALE_SUPPORT |
31 | |
32 | #if ENABLE_FEATURE_VI_8BIT |
33 | //FIXME: this does not work properly for Unicode anyway |
34 | # define Isprint(c) (isprint)(c) |
35 | #else |
36 | # define Isprint(c) isprint_asciionly(c) |
37 | #endif |
38 | |
39 | #else |
40 | |
41 | /* 0x9b is Meta-ESC */ |
42 | #if ENABLE_FEATURE_VI_8BIT |
43 | #define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b) |
44 | #else |
45 | #define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f) |
46 | #endif |
47 | |
48 | #endif |
49 | |
50 | |
51 | enum { |
52 | MAX_TABSTOP = 32, // sanity limit |
53 | // User input len. Need not be extra big. |
54 | // Lines in file being edited *can* be bigger than this. |
55 | MAX_INPUT_LEN = 128, |
56 | // Sanity limits. We have only one buffer of this size. |
57 | MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN, |
58 | MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN, |
59 | }; |
60 | |
61 | /* vt102 typical ESC sequence */ |
62 | /* terminal standout start/normal ESC sequence */ |
63 | #define SOs "\033[7m" |
64 | #define SOn "\033[0m" |
65 | /* terminal bell sequence */ |
66 | #define bell "\007" |
67 | /* Clear-end-of-line and Clear-end-of-screen ESC sequence */ |
68 | #define Ceol "\033[K" |
69 | #define Ceos "\033[J" |
70 | /* Cursor motion arbitrary destination ESC sequence */ |
71 | #define CMrc "\033[%u;%uH" |
72 | /* Cursor motion up and down ESC sequence */ |
73 | #define CMup "\033[A" |
74 | #define CMdown "\n" |
75 | |
76 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK |
77 | // cmds modifying text[] |
78 | // vda: removed "aAiIs" as they switch us into insert mode |
79 | // and remembering input for replay after them makes no sense |
80 | static const char modifying_cmds[] = "cCdDJoOpPrRxX<>~"; |
81 | #endif |
82 | |
83 | enum { |
84 | YANKONLY = FALSE, |
85 | YANKDEL = TRUE, |
86 | FORWARD = 1, // code depends on "1" for array index |
87 | BACK = -1, // code depends on "-1" for array index |
88 | LIMITED = 0, // how much of text[] in char_search |
89 | FULL = 1, // how much of text[] in char_search |
90 | |
91 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot" |
92 | S_TO_WS = 2, // used in skip_thing() for moving "dot" |
93 | S_OVER_WS = 3, // used in skip_thing() for moving "dot" |
94 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot" |
95 | S_END_ALNUM = 5, // used in skip_thing() for moving "dot" |
96 | }; |
97 | |
98 | |
99 | /* vi.c expects chars to be unsigned. */ |
100 | /* busybox build system provides that, but it's better */ |
101 | /* to audit and fix the source */ |
102 | |
103 | struct globals { |
104 | /* many references - keep near the top of globals */ |
105 | char *text, *end; // pointers to the user data in memory |
106 | char *dot; // where all the action takes place |
107 | int text_size; // size of the allocated buffer |
108 | |
109 | /* the rest */ |
110 | smallint vi_setops; |
111 | #define VI_AUTOINDENT 1 |
112 | #define VI_SHOWMATCH 2 |
113 | #define VI_IGNORECASE 4 |
114 | #define VI_ERR_METHOD 8 |
115 | #define autoindent (vi_setops & VI_AUTOINDENT) |
116 | #define showmatch (vi_setops & VI_SHOWMATCH ) |
117 | #define ignorecase (vi_setops & VI_IGNORECASE) |
118 | /* indicate error with beep or flash */ |
119 | #define err_method (vi_setops & VI_ERR_METHOD) |
120 | |
121 | #if ENABLE_FEATURE_VI_READONLY |
122 | smallint readonly_mode; |
123 | #define SET_READONLY_FILE(flags) ((flags) |= 0x01) |
124 | #define SET_READONLY_MODE(flags) ((flags) |= 0x02) |
125 | #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe) |
126 | #else |
127 | #define SET_READONLY_FILE(flags) ((void)0) |
128 | #define SET_READONLY_MODE(flags) ((void)0) |
129 | #define UNSET_READONLY_FILE(flags) ((void)0) |
130 | #endif |
131 | |
132 | smallint editing; // >0 while we are editing a file |
133 | // [code audit says "can be 0, 1 or 2 only"] |
134 | smallint cmd_mode; // 0=command 1=insert 2=replace |
135 | int file_modified; // buffer contents changed (counter, not flag!) |
136 | int last_file_modified; // = -1; |
137 | int fn_start; // index of first cmd line file name |
138 | int save_argc; // how many file names on cmd line |
139 | int cmdcnt; // repetition count |
140 | unsigned rows, columns; // the terminal screen is this size |
141 | #if ENABLE_FEATURE_VI_ASK_TERMINAL |
142 | int get_rowcol_error; |
143 | #endif |
144 | int crow, ccol; // cursor is on Crow x Ccol |
145 | int offset; // chars scrolled off the screen to the left |
146 | int have_status_msg; // is default edit status needed? |
147 | // [don't make smallint!] |
148 | int last_status_cksum; // hash of current status line |
149 | char *current_filename; |
150 | char *screenbegin; // index into text[], of top line on the screen |
151 | char *screen; // pointer to the virtual screen buffer |
152 | int screensize; // and its size |
153 | int tabstop; |
154 | int last_forward_char; // last char searched for with 'f' (int because of Unicode) |
155 | char erase_char; // the users erase character |
156 | char last_input_char; // last char read from user |
157 | |
158 | #if ENABLE_FEATURE_VI_DOT_CMD |
159 | smallint adding2q; // are we currently adding user input to q |
160 | int lmc_len; // length of last_modifying_cmd |
161 | char *ioq, *ioq_start; // pointer to string for get_one_char to "read" |
162 | #endif |
163 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR |
164 | int last_row; // where the cursor was last moved to |
165 | #endif |
166 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME |
167 | int my_pid; |
168 | #endif |
169 | #if ENABLE_FEATURE_VI_SEARCH |
170 | char *last_search_pattern; // last pattern from a '/' or '?' search |
171 | #endif |
172 | |
173 | /* former statics */ |
174 | #if ENABLE_FEATURE_VI_YANKMARK |
175 | char *edit_file__cur_line; |
176 | #endif |
177 | int refresh__old_offset; |
178 | int format_edit_status__tot; |
179 | |
180 | /* a few references only */ |
181 | #if ENABLE_FEATURE_VI_YANKMARK |
182 | int YDreg, Ureg; // default delete register and orig line for "U" |
183 | char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27 |
184 | char *mark[28]; // user marks points somewhere in text[]- a-z and previous context '' |
185 | char *context_start, *context_end; |
186 | #endif |
187 | #if ENABLE_FEATURE_VI_USE_SIGNALS |
188 | sigjmp_buf restart; // catch_sig() |
189 | #endif |
190 | struct termios term_orig, term_vi; // remember what the cooked mode was |
191 | #if ENABLE_FEATURE_VI_COLON |
192 | char *initial_cmds[3]; // currently 2 entries, NULL terminated |
193 | #endif |
194 | // Should be just enough to hold a key sequence, |
195 | // but CRASHME mode uses it as generated command buffer too |
196 | #if ENABLE_FEATURE_VI_CRASHME |
197 | char readbuffer[128]; |
198 | #else |
199 | char readbuffer[KEYCODE_BUFFER_SIZE]; |
200 | #endif |
201 | #define STATUS_BUFFER_LEN 200 |
202 | char status_buffer[STATUS_BUFFER_LEN]; // messages to the user |
203 | #if ENABLE_FEATURE_VI_DOT_CMD |
204 | char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "." |
205 | #endif |
206 | char get_input_line__buf[MAX_INPUT_LEN]; /* former static */ |
207 | |
208 | char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2]; |
209 | }; |
210 | #define G (*ptr_to_globals) |
211 | #define text (G.text ) |
212 | #define text_size (G.text_size ) |
213 | #define end (G.end ) |
214 | #define dot (G.dot ) |
215 | #define reg (G.reg ) |
216 | |
217 | #define vi_setops (G.vi_setops ) |
218 | #define editing (G.editing ) |
219 | #define cmd_mode (G.cmd_mode ) |
220 | #define file_modified (G.file_modified ) |
221 | #define last_file_modified (G.last_file_modified ) |
222 | #define fn_start (G.fn_start ) |
223 | #define save_argc (G.save_argc ) |
224 | #define cmdcnt (G.cmdcnt ) |
225 | #define rows (G.rows ) |
226 | #define columns (G.columns ) |
227 | #define crow (G.crow ) |
228 | #define ccol (G.ccol ) |
229 | #define offset (G.offset ) |
230 | #define status_buffer (G.status_buffer ) |
231 | #define have_status_msg (G.have_status_msg ) |
232 | #define last_status_cksum (G.last_status_cksum ) |
233 | #define current_filename (G.current_filename ) |
234 | #define screen (G.screen ) |
235 | #define screensize (G.screensize ) |
236 | #define screenbegin (G.screenbegin ) |
237 | #define tabstop (G.tabstop ) |
238 | #define last_forward_char (G.last_forward_char ) |
239 | #define erase_char (G.erase_char ) |
240 | #define last_input_char (G.last_input_char ) |
241 | #if ENABLE_FEATURE_VI_READONLY |
242 | #define readonly_mode (G.readonly_mode ) |
243 | #else |
244 | #define readonly_mode 0 |
245 | #endif |
246 | #define adding2q (G.adding2q ) |
247 | #define lmc_len (G.lmc_len ) |
248 | #define ioq (G.ioq ) |
249 | #define ioq_start (G.ioq_start ) |
250 | #define last_row (G.last_row ) |
251 | #define my_pid (G.my_pid ) |
252 | #define last_search_pattern (G.last_search_pattern) |
253 | |
254 | #define edit_file__cur_line (G.edit_file__cur_line) |
255 | #define refresh__old_offset (G.refresh__old_offset) |
256 | #define format_edit_status__tot (G.format_edit_status__tot) |
257 | |
258 | #define YDreg (G.YDreg ) |
259 | #define Ureg (G.Ureg ) |
260 | #define mark (G.mark ) |
261 | #define context_start (G.context_start ) |
262 | #define context_end (G.context_end ) |
263 | #define restart (G.restart ) |
264 | #define term_orig (G.term_orig ) |
265 | #define term_vi (G.term_vi ) |
266 | #define initial_cmds (G.initial_cmds ) |
267 | #define readbuffer (G.readbuffer ) |
268 | #define scr_out_buf (G.scr_out_buf ) |
269 | #define last_modifying_cmd (G.last_modifying_cmd ) |
270 | #define get_input_line__buf (G.get_input_line__buf) |
271 | |
272 | #define INIT_G() do { \ |
273 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
274 | last_file_modified = -1; \ |
275 | /* "" but has space for 2 chars: */ \ |
276 | IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \ |
277 | } while (0) |
278 | |
279 | |
280 | static int init_text_buffer(char *); // init from file or create new |
281 | static void edit_file(char *); // edit one file |
282 | static void do_cmd(int); // execute a command |
283 | static int next_tabstop(int); |
284 | static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot |
285 | static char *begin_line(char *); // return pointer to cur line B-o-l |
286 | static char *end_line(char *); // return pointer to cur line E-o-l |
287 | static char *prev_line(char *); // return pointer to prev line B-o-l |
288 | static char *next_line(char *); // return pointer to next line B-o-l |
289 | static char *end_screen(void); // get pointer to last char on screen |
290 | static int count_lines(char *, char *); // count line from start to stop |
291 | static char *find_line(int); // find begining of line #li |
292 | static char *move_to_col(char *, int); // move "p" to column l |
293 | static void dot_left(void); // move dot left- dont leave line |
294 | static void dot_right(void); // move dot right- dont leave line |
295 | static void dot_begin(void); // move dot to B-o-l |
296 | static void dot_end(void); // move dot to E-o-l |
297 | static void dot_next(void); // move dot to next line B-o-l |
298 | static void dot_prev(void); // move dot to prev line B-o-l |
299 | static void dot_scroll(int, int); // move the screen up or down |
300 | static void dot_skip_over_ws(void); // move dot pat WS |
301 | static void dot_delete(void); // delete the char at 'dot' |
302 | static char *bound_dot(char *); // make sure text[0] <= P < "end" |
303 | static char *new_screen(int, int); // malloc virtual screen memory |
304 | static char *char_insert(char *, char); // insert the char c at 'p' |
305 | // might reallocate text[]! use p += stupid_insert(p, ...), |
306 | // and be careful to not use pointers into potentially freed text[]! |
307 | static uintptr_t stupid_insert(char *, char); // stupidly insert the char c at 'p' |
308 | static int find_range(char **, char **, char); // return pointers for an object |
309 | static int st_test(char *, int, int, char *); // helper for skip_thing() |
310 | static char *skip_thing(char *, int, int, int); // skip some object |
311 | static char *find_pair(char *, char); // find matching pair () [] {} |
312 | static char *text_hole_delete(char *, char *); // at "p", delete a 'size' byte hole |
313 | // might reallocate text[]! use p += text_hole_make(p, ...), |
314 | // and be careful to not use pointers into potentially freed text[]! |
315 | static uintptr_t text_hole_make(char *, int); // at "p", make a 'size' byte hole |
316 | static char *yank_delete(char *, char *, int, int); // yank text[] into register then delete |
317 | static void show_help(void); // display some help info |
318 | static void rawmode(void); // set "raw" mode on tty |
319 | static void cookmode(void); // return to "cooked" mode on tty |
320 | // sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready) |
321 | static int mysleep(int); |
322 | static int readit(void); // read (maybe cursor) key from stdin |
323 | static int get_one_char(void); // read 1 char from stdin |
324 | static int file_size(const char *); // what is the byte size of "fn" |
325 | #if !ENABLE_FEATURE_VI_READONLY |
326 | #define file_insert(fn, p, update_ro_status) file_insert(fn, p) |
327 | #endif |
328 | // file_insert might reallocate text[]! |
329 | static int file_insert(const char *, char *, int); |
330 | static int file_write(char *, char *, char *); |
331 | #if !ENABLE_FEATURE_VI_OPTIMIZE_CURSOR |
332 | #define place_cursor(a, b, optimize) place_cursor(a, b) |
333 | #endif |
334 | static void place_cursor(int, int, int); |
335 | static void screen_erase(void); |
336 | static void clear_to_eol(void); |
337 | static void clear_to_eos(void); |
338 | static void go_bottom_and_clear_to_eol(void); |
339 | static void standout_start(void); // send "start reverse video" sequence |
340 | static void standout_end(void); // send "end reverse video" sequence |
341 | static void flash(int); // flash the terminal screen |
342 | static void show_status_line(void); // put a message on the bottom line |
343 | static void status_line(const char *, ...); // print to status buf |
344 | static void status_line_bold(const char *, ...); |
345 | static void not_implemented(const char *); // display "Not implemented" message |
346 | static int format_edit_status(void); // format file status on status line |
347 | static void redraw(int); // force a full screen refresh |
348 | static char* format_line(char* /*, int*/); |
349 | static void refresh(int); // update the terminal from screen[] |
350 | |
351 | static void Indicate_Error(void); // use flash or beep to indicate error |
352 | #define indicate_error(c) Indicate_Error() |
353 | static void Hit_Return(void); |
354 | |
355 | #if ENABLE_FEATURE_VI_SEARCH |
356 | static char *char_search(char *, const char *, int, int); // search for pattern starting at p |
357 | static int mycmp(const char *, const char *, int); // string cmp based in "ignorecase" |
358 | #endif |
359 | #if ENABLE_FEATURE_VI_COLON |
360 | static char *get_one_address(char *, int *); // get colon addr, if present |
361 | static char *get_address(char *, int *, int *); // get two colon addrs, if present |
362 | static void colon(char *); // execute the "colon" mode cmds |
363 | #endif |
364 | #if ENABLE_FEATURE_VI_USE_SIGNALS |
365 | static void winch_sig(int); // catch window size changes |
366 | static void suspend_sig(int); // catch ctrl-Z |
367 | static void catch_sig(int); // catch ctrl-C and alarm time-outs |
368 | #endif |
369 | #if ENABLE_FEATURE_VI_DOT_CMD |
370 | static void start_new_cmd_q(char); // new queue for command |
371 | static void end_cmd_q(void); // stop saving input chars |
372 | #else |
373 | #define end_cmd_q() ((void)0) |
374 | #endif |
375 | #if ENABLE_FEATURE_VI_SETOPTS |
376 | static void showmatching(char *); // show the matching pair () [] {} |
377 | #endif |
378 | #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME |
379 | // might reallocate text[]! use p += string_insert(p, ...), |
380 | // and be careful to not use pointers into potentially freed text[]! |
381 | static uintptr_t string_insert(char *, const char *); // insert the string at 'p' |
382 | #endif |
383 | #if ENABLE_FEATURE_VI_YANKMARK |
384 | static char *text_yank(char *, char *, int); // save copy of "p" into a register |
385 | static char what_reg(void); // what is letter of current YDreg |
386 | static void check_context(char); // remember context for '' command |
387 | #endif |
388 | #if ENABLE_FEATURE_VI_CRASHME |
389 | static void crash_dummy(); |
390 | static void crash_test(); |
391 | static int crashme = 0; |
392 | #endif |
393 | |
394 | |
395 | static void write1(const char *out) |
396 | { |
397 | fputs(out, stdout); |
398 | } |
399 | |
400 | int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
401 | int vi_main(int argc, char **argv) |
402 | { |
403 | int c; |
404 | |
405 | INIT_G(); |
406 | |
407 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME |
408 | my_pid = getpid(); |
409 | #endif |
410 | #if ENABLE_FEATURE_VI_CRASHME |
411 | srand((long) my_pid); |
412 | #endif |
413 | #ifdef NO_SUCH_APPLET_YET |
414 | /* If we aren't "vi", we are "view" */ |
415 | if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) { |
416 | SET_READONLY_MODE(readonly_mode); |
417 | } |
418 | #endif |
419 | |
420 | vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE; |
421 | // 1- process $HOME/.exrc file (not inplemented yet) |
422 | // 2- process EXINIT variable from environment |
423 | // 3- process command line args |
424 | #if ENABLE_FEATURE_VI_COLON |
425 | { |
426 | char *p = getenv("EXINIT"); |
427 | if (p && *p) |
428 | initial_cmds[0] = xstrndup(p, MAX_INPUT_LEN); |
429 | } |
430 | #endif |
431 | while ((c = getopt(argc, argv, "hCRH" IF_FEATURE_VI_COLON("c:"))) != -1) { |
432 | switch (c) { |
433 | #if ENABLE_FEATURE_VI_CRASHME |
434 | case 'C': |
435 | crashme = 1; |
436 | break; |
437 | #endif |
438 | #if ENABLE_FEATURE_VI_READONLY |
439 | case 'R': // Read-only flag |
440 | SET_READONLY_MODE(readonly_mode); |
441 | break; |
442 | #endif |
443 | #if ENABLE_FEATURE_VI_COLON |
444 | case 'c': // cmd line vi command |
445 | if (*optarg) |
446 | initial_cmds[initial_cmds[0] != 0] = xstrndup(optarg, MAX_INPUT_LEN); |
447 | break; |
448 | #endif |
449 | case 'H': |
450 | show_help(); |
451 | /* fall through */ |
452 | default: |
453 | bb_show_usage(); |
454 | return 1; |
455 | } |
456 | } |
457 | |
458 | // The argv array can be used by the ":next" and ":rewind" commands |
459 | // save optind. |
460 | fn_start = optind; // remember first file name for :next and :rew |
461 | save_argc = argc; |
462 | |
463 | //----- This is the main file handling loop -------------- |
464 | while (1) { |
465 | edit_file(argv[optind]); /* param might be NULL */ |
466 | if (++optind >= argc) |
467 | break; |
468 | } |
469 | //----------------------------------------------------------- |
470 | |
471 | return 0; |
472 | } |
473 | |
474 | /* read text from file or create an empty buf */ |
475 | /* will also update current_filename */ |
476 | static int init_text_buffer(char *fn) |
477 | { |
478 | int rc; |
479 | int size = file_size(fn); // file size. -1 means does not exist. |
480 | |
481 | /* allocate/reallocate text buffer */ |
482 | free(text); |
483 | text_size = size + 10240; |
484 | screenbegin = dot = end = text = xzalloc(text_size); |
485 | |
486 | if (fn != current_filename) { |
487 | free(current_filename); |
488 | current_filename = xstrdup(fn); |
489 | } |
490 | if (size < 0) { |
491 | // file dont exist. Start empty buf with dummy line |
492 | char_insert(text, '\n'); |
493 | rc = 0; |
494 | } else { |
495 | rc = file_insert(fn, text, 1); |
496 | } |
497 | file_modified = 0; |
498 | last_file_modified = -1; |
499 | #if ENABLE_FEATURE_VI_YANKMARK |
500 | /* init the marks. */ |
501 | memset(mark, 0, sizeof(mark)); |
502 | #endif |
503 | return rc; |
504 | } |
505 | |
506 | #if ENABLE_FEATURE_VI_WIN_RESIZE |
507 | static int query_screen_dimensions(void) |
508 | { |
509 | int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows); |
510 | if (rows > MAX_SCR_ROWS) |
511 | rows = MAX_SCR_ROWS; |
512 | if (columns > MAX_SCR_COLS) |
513 | columns = MAX_SCR_COLS; |
514 | return err; |
515 | } |
516 | #else |
517 | # define query_screen_dimensions() (0) |
518 | #endif |
519 | |
520 | static void edit_file(char *fn) |
521 | { |
522 | #if ENABLE_FEATURE_VI_YANKMARK |
523 | #define cur_line edit_file__cur_line |
524 | #endif |
525 | int c; |
526 | int size; |
527 | #if ENABLE_FEATURE_VI_USE_SIGNALS |
528 | int sig; |
529 | #endif |
530 | |
531 | editing = 1; // 0 = exit, 1 = one file, 2 = multiple files |
532 | rawmode(); |
533 | rows = 24; |
534 | columns = 80; |
535 | size = 0; |
536 | IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions(); |
537 | #if ENABLE_FEATURE_VI_ASK_TERMINAL |
538 | if (G.get_rowcol_error /* TODO? && no input on stdin */) { |
539 | uint64_t k; |
540 | write1("\033[999;999H" "\033[6n"); |
541 | fflush_all(); |
542 | k = read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100); |
543 | if ((int32_t)k == KEYCODE_CURSOR_POS) { |
544 | uint32_t rc = (k >> 32); |
545 | columns = (rc & 0x7fff); |
546 | if (columns > MAX_SCR_COLS) |
547 | columns = MAX_SCR_COLS; |
548 | rows = ((rc >> 16) & 0x7fff); |
549 | if (rows > MAX_SCR_ROWS) |
550 | rows = MAX_SCR_ROWS; |
551 | } |
552 | } |
553 | #endif |
554 | new_screen(rows, columns); // get memory for virtual screen |
555 | init_text_buffer(fn); |
556 | |
557 | #if ENABLE_FEATURE_VI_YANKMARK |
558 | YDreg = 26; // default Yank/Delete reg |
559 | Ureg = 27; // hold orig line for "U" cmd |
560 | mark[26] = mark[27] = text; // init "previous context" |
561 | #endif |
562 | |
563 | last_forward_char = last_input_char = '\0'; |
564 | crow = 0; |
565 | ccol = 0; |
566 | |
567 | #if ENABLE_FEATURE_VI_USE_SIGNALS |
568 | signal(SIGINT, catch_sig); |
569 | signal(SIGWINCH, winch_sig); |
570 | signal(SIGTSTP, suspend_sig); |
571 | sig = sigsetjmp(restart, 1); |
572 | if (sig != 0) { |
573 | screenbegin = dot = text; |
574 | } |
575 | #endif |
576 | |
577 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace |
578 | cmdcnt = 0; |
579 | tabstop = 8; |
580 | offset = 0; // no horizontal offset |
581 | c = '\0'; |
582 | #if ENABLE_FEATURE_VI_DOT_CMD |
583 | free(ioq_start); |
584 | ioq = ioq_start = NULL; |
585 | lmc_len = 0; |
586 | adding2q = 0; |
587 | #endif |
588 | |
589 | #if ENABLE_FEATURE_VI_COLON |
590 | { |
591 | char *p, *q; |
592 | int n = 0; |
593 | |
594 | while ((p = initial_cmds[n]) != NULL) { |
595 | do { |
596 | q = p; |
597 | p = strchr(q, '\n'); |
598 | if (p) |
599 | while (*p == '\n') |
600 | *p++ = '\0'; |
601 | if (*q) |
602 | colon(q); |
603 | } while (p); |
604 | free(initial_cmds[n]); |
605 | initial_cmds[n] = NULL; |
606 | n++; |
607 | } |
608 | } |
609 | #endif |
610 | redraw(FALSE); // dont force every col re-draw |
611 | //------This is the main Vi cmd handling loop ----------------------- |
612 | while (editing > 0) { |
613 | #if ENABLE_FEATURE_VI_CRASHME |
614 | if (crashme > 0) { |
615 | if ((end - text) > 1) { |
616 | crash_dummy(); // generate a random command |
617 | } else { |
618 | crashme = 0; |
619 | string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string |
620 | dot = text; |
621 | refresh(FALSE); |
622 | } |
623 | } |
624 | #endif |
625 | last_input_char = c = get_one_char(); // get a cmd from user |
626 | #if ENABLE_FEATURE_VI_YANKMARK |
627 | // save a copy of the current line- for the 'U" command |
628 | if (begin_line(dot) != cur_line) { |
629 | cur_line = begin_line(dot); |
630 | text_yank(begin_line(dot), end_line(dot), Ureg); |
631 | } |
632 | #endif |
633 | #if ENABLE_FEATURE_VI_DOT_CMD |
634 | // These are commands that change text[]. |
635 | // Remember the input for the "." command |
636 | if (!adding2q && ioq_start == NULL |
637 | && cmd_mode == 0 // command mode |
638 | && c > '\0' // exclude NUL and non-ASCII chars |
639 | && c < 0x7f // (Unicode and such) |
640 | && strchr(modifying_cmds, c) |
641 | ) { |
642 | start_new_cmd_q(c); |
643 | } |
644 | #endif |
645 | do_cmd(c); // execute the user command |
646 | |
647 | // poll to see if there is input already waiting. if we are |
648 | // not able to display output fast enough to keep up, skip |
649 | // the display update until we catch up with input. |
650 | if (!readbuffer[0] && mysleep(0) == 0) { |
651 | // no input pending - so update output |
652 | refresh(FALSE); |
653 | show_status_line(); |
654 | } |
655 | #if ENABLE_FEATURE_VI_CRASHME |
656 | if (crashme > 0) |
657 | crash_test(); // test editor variables |
658 | #endif |
659 | } |
660 | //------------------------------------------------------------------- |
661 | |
662 | go_bottom_and_clear_to_eol(); |
663 | cookmode(); |
664 | #undef cur_line |
665 | } |
666 | |
667 | //----- The Colon commands ------------------------------------- |
668 | #if ENABLE_FEATURE_VI_COLON |
669 | static char *get_one_address(char *p, int *addr) // get colon addr, if present |
670 | { |
671 | int st; |
672 | char *q; |
673 | IF_FEATURE_VI_YANKMARK(char c;) |
674 | IF_FEATURE_VI_SEARCH(char *pat;) |
675 | |
676 | *addr = -1; // assume no addr |
677 | if (*p == '.') { // the current line |
678 | p++; |
679 | q = begin_line(dot); |
680 | *addr = count_lines(text, q); |
681 | } |
682 | #if ENABLE_FEATURE_VI_YANKMARK |
683 | else if (*p == '\'') { // is this a mark addr |
684 | p++; |
685 | c = tolower(*p); |
686 | p++; |
687 | if (c >= 'a' && c <= 'z') { |
688 | // we have a mark |
689 | c = c - 'a'; |
690 | q = mark[(unsigned char) c]; |
691 | if (q != NULL) { // is mark valid |
692 | *addr = count_lines(text, q); |
693 | } |
694 | } |
695 | } |
696 | #endif |
697 | #if ENABLE_FEATURE_VI_SEARCH |
698 | else if (*p == '/') { // a search pattern |
699 | q = strchrnul(++p, '/'); |
700 | pat = xstrndup(p, q - p); // save copy of pattern |
701 | p = q; |
702 | if (*p == '/') |
703 | p++; |
704 | q = char_search(dot, pat, FORWARD, FULL); |
705 | if (q != NULL) { |
706 | *addr = count_lines(text, q); |
707 | } |
708 | free(pat); |
709 | } |
710 | #endif |
711 | else if (*p == '$') { // the last line in file |
712 | p++; |
713 | q = begin_line(end - 1); |
714 | *addr = count_lines(text, q); |
715 | } else if (isdigit(*p)) { // specific line number |
716 | sscanf(p, "%d%n", addr, &st); |
717 | p += st; |
718 | } else { |
719 | // unrecognized address - assume -1 |
720 | *addr = -1; |
721 | } |
722 | return p; |
723 | } |
724 | |
725 | static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present |
726 | { |
727 | //----- get the address' i.e., 1,3 'a,'b ----- |
728 | // get FIRST addr, if present |
729 | while (isblank(*p)) |
730 | p++; // skip over leading spaces |
731 | if (*p == '%') { // alias for 1,$ |
732 | p++; |
733 | *b = 1; |
734 | *e = count_lines(text, end-1); |
735 | goto ga0; |
736 | } |
737 | p = get_one_address(p, b); |
738 | while (isblank(*p)) |
739 | p++; |
740 | if (*p == ',') { // is there a address separator |
741 | p++; |
742 | while (isblank(*p)) |
743 | p++; |
744 | // get SECOND addr, if present |
745 | p = get_one_address(p, e); |
746 | } |
747 | ga0: |
748 | while (isblank(*p)) |
749 | p++; // skip over trailing spaces |
750 | return p; |
751 | } |
752 | |
753 | #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS |
754 | static void setops(const char *args, const char *opname, int flg_no, |
755 | const char *short_opname, int opt) |
756 | { |
757 | const char *a = args + flg_no; |
758 | int l = strlen(opname) - 1; /* opname have + ' ' */ |
759 | |
760 | // maybe strncmp? we had tons of erroneous strncasecmp's... |
761 | if (strncasecmp(a, opname, l) == 0 |
762 | || strncasecmp(a, short_opname, 2) == 0 |
763 | ) { |
764 | if (flg_no) |
765 | vi_setops &= ~opt; |
766 | else |
767 | vi_setops |= opt; |
768 | } |
769 | } |
770 | #endif |
771 | |
772 | // buf must be no longer than MAX_INPUT_LEN! |
773 | static void colon(char *buf) |
774 | { |
775 | char c, *orig_buf, *buf1, *q, *r; |
776 | char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN]; |
777 | int i, l, li, ch, b, e; |
778 | int useforce, forced = FALSE; |
779 | |
780 | // :3154 // if (-e line 3154) goto it else stay put |
781 | // :4,33w! foo // write a portion of buffer to file "foo" |
782 | // :w // write all of buffer to current file |
783 | // :q // quit |
784 | // :q! // quit- dont care about modified file |
785 | // :'a,'z!sort -u // filter block through sort |
786 | // :'f // goto mark "f" |
787 | // :'fl // list literal the mark "f" line |
788 | // :.r bar // read file "bar" into buffer before dot |
789 | // :/123/,/abc/d // delete lines from "123" line to "abc" line |
790 | // :/xyz/ // goto the "xyz" line |
791 | // :s/find/replace/ // substitute pattern "find" with "replace" |
792 | // :!<cmd> // run <cmd> then return |
793 | // |
794 | |
795 | if (!buf[0]) |
796 | goto ret; |
797 | if (*buf == ':') |
798 | buf++; // move past the ':' |
799 | |
800 | li = ch = i = 0; |
801 | b = e = -1; |
802 | q = text; // assume 1,$ for the range |
803 | r = end - 1; |
804 | li = count_lines(text, end - 1); |
805 | fn = current_filename; |
806 | |
807 | // look for optional address(es) :. :1 :1,9 :'q,'a :% |
808 | buf = get_address(buf, &b, &e); |
809 | |
810 | // remember orig command line |
811 | orig_buf = buf; |
812 | |
813 | // get the COMMAND into cmd[] |
814 | buf1 = cmd; |
815 | while (*buf != '\0') { |
816 | if (isspace(*buf)) |
817 | break; |
818 | *buf1++ = *buf++; |
819 | } |
820 | *buf1 = '\0'; |
821 | // get any ARGuments |
822 | while (isblank(*buf)) |
823 | buf++; |
824 | strcpy(args, buf); |
825 | useforce = FALSE; |
826 | buf1 = last_char_is(cmd, '!'); |
827 | if (buf1) { |
828 | useforce = TRUE; |
829 | *buf1 = '\0'; // get rid of ! |
830 | } |
831 | if (b >= 0) { |
832 | // if there is only one addr, then the addr |
833 | // is the line number of the single line the |
834 | // user wants. So, reset the end |
835 | // pointer to point at end of the "b" line |
836 | q = find_line(b); // what line is #b |
837 | r = end_line(q); |
838 | li = 1; |
839 | } |
840 | if (e >= 0) { |
841 | // we were given two addrs. change the |
842 | // end pointer to the addr given by user. |
843 | r = find_line(e); // what line is #e |
844 | r = end_line(r); |
845 | li = e - b + 1; |
846 | } |
847 | // ------------ now look for the command ------------ |
848 | i = strlen(cmd); |
849 | if (i == 0) { // :123CR goto line #123 |
850 | if (b >= 0) { |
851 | dot = find_line(b); // what line is #b |
852 | dot_skip_over_ws(); |
853 | } |
854 | } |
855 | #if ENABLE_FEATURE_ALLOW_EXEC |
856 | else if (cmd[0] == '!') { // run a cmd |
857 | int retcode; |
858 | // :!ls run the <cmd> |
859 | go_bottom_and_clear_to_eol(); |
860 | cookmode(); |
861 | retcode = system(orig_buf + 1); // run the cmd |
862 | if (retcode) |
863 | printf("\nshell returned %i\n\n", retcode); |
864 | rawmode(); |
865 | Hit_Return(); // let user see results |
866 | } |
867 | #endif |
868 | else if (cmd[0] == '=' && !cmd[1]) { // where is the address |
869 | if (b < 0) { // no addr given- use defaults |
870 | b = e = count_lines(text, dot); |
871 | } |
872 | status_line("%d", b); |
873 | } else if (strncmp(cmd, "delete", i) == 0) { // delete lines |
874 | if (b < 0) { // no addr given- use defaults |
875 | q = begin_line(dot); // assume .,. for the range |
876 | r = end_line(dot); |
877 | } |
878 | dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines |
879 | dot_skip_over_ws(); |
880 | } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file |
881 | // don't edit, if the current file has been modified |
882 | if (file_modified && !useforce) { |
883 | status_line_bold("No write since last change (:edit! overrides)"); |
884 | goto ret; |
885 | } |
886 | if (args[0]) { |
887 | // the user supplied a file name |
888 | fn = args; |
889 | } else if (current_filename && current_filename[0]) { |
890 | // no user supplied name- use the current filename |
891 | // fn = current_filename; was set by default |
892 | } else { |
893 | // no user file name, no current name- punt |
894 | status_line_bold("No current filename"); |
895 | goto ret; |
896 | } |
897 | |
898 | if (init_text_buffer(fn) < 0) |
899 | goto ret; |
900 | |
901 | #if ENABLE_FEATURE_VI_YANKMARK |
902 | if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) { |
903 | free(reg[Ureg]); // free orig line reg- for 'U' |
904 | reg[Ureg]= 0; |
905 | } |
906 | if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) { |
907 | free(reg[YDreg]); // free default yank/delete register |
908 | reg[YDreg]= 0; |
909 | } |
910 | #endif |
911 | // how many lines in text[]? |
912 | li = count_lines(text, end - 1); |
913 | status_line("\"%s\"%s" |
914 | IF_FEATURE_VI_READONLY("%s") |
915 | " %dL, %dC", current_filename, |
916 | (file_size(fn) < 0 ? " [New file]" : ""), |
917 | IF_FEATURE_VI_READONLY( |
918 | ((readonly_mode) ? " [Readonly]" : ""), |
919 | ) |
920 | li, ch); |
921 | } else if (strncmp(cmd, "file", i) == 0) { // what File is this |
922 | if (b != -1 || e != -1) { |
923 | status_line_bold("No address allowed on this command"); |
924 | goto ret; |
925 | } |
926 | if (args[0]) { |
927 | // user wants a new filename |
928 | free(current_filename); |
929 | current_filename = xstrdup(args); |
930 | } else { |
931 | // user wants file status info |
932 | last_status_cksum = 0; // force status update |
933 | } |
934 | } else if (strncmp(cmd, "features", i) == 0) { // what features are available |
935 | // print out values of all features |
936 | go_bottom_and_clear_to_eol(); |
937 | cookmode(); |
938 | show_help(); |
939 | rawmode(); |
940 | Hit_Return(); |
941 | } else if (strncmp(cmd, "list", i) == 0) { // literal print line |
942 | if (b < 0) { // no addr given- use defaults |
943 | q = begin_line(dot); // assume .,. for the range |
944 | r = end_line(dot); |
945 | } |
946 | go_bottom_and_clear_to_eol(); |
947 | puts("\r"); |
948 | for (; q <= r; q++) { |
949 | int c_is_no_print; |
950 | |
951 | c = *q; |
952 | c_is_no_print = (c & 0x80) && !Isprint(c); |
953 | if (c_is_no_print) { |
954 | c = '.'; |
955 | standout_start(); |
956 | } |
957 | if (c == '\n') { |
958 | write1("$\r"); |
959 | } else if (c < ' ' || c == 127) { |
960 | bb_putchar('^'); |
961 | if (c == 127) |
962 | c = '?'; |
963 | else |
964 | c += '@'; |
965 | } |
966 | bb_putchar(c); |
967 | if (c_is_no_print) |
968 | standout_end(); |
969 | } |
970 | Hit_Return(); |
971 | } else if (strncmp(cmd, "quit", i) == 0 // quit |
972 | || strncmp(cmd, "next", i) == 0 // edit next file |
973 | ) { |
974 | int n; |
975 | if (useforce) { |
976 | // force end of argv list |
977 | if (*cmd == 'q') { |
978 | optind = save_argc; |
979 | } |
980 | editing = 0; |
981 | goto ret; |
982 | } |
983 | // don't exit if the file been modified |
984 | if (file_modified) { |
985 | status_line_bold("No write since last change (:%s! overrides)", |
986 | (*cmd == 'q' ? "quit" : "next")); |
987 | goto ret; |
988 | } |
989 | // are there other file to edit |
990 | n = save_argc - optind - 1; |
991 | if (*cmd == 'q' && n > 0) { |
992 | status_line_bold("%d more file(s) to edit", n); |
993 | goto ret; |
994 | } |
995 | if (*cmd == 'n' && n <= 0) { |
996 | status_line_bold("No more files to edit"); |
997 | goto ret; |
998 | } |
999 | editing = 0; |
1000 | } else if (strncmp(cmd, "read", i) == 0) { // read file into text[] |
1001 | fn = args; |
1002 | if (!fn[0]) { |
1003 | status_line_bold("No filename given"); |
1004 | goto ret; |
1005 | } |
1006 | if (b < 0) { // no addr given- use defaults |
1007 | q = begin_line(dot); // assume "dot" |
1008 | } |
1009 | // read after current line- unless user said ":0r foo" |
1010 | if (b != 0) |
1011 | q = next_line(q); |
1012 | { // dance around potentially-reallocated text[] |
1013 | uintptr_t ofs = q - text; |
1014 | ch = file_insert(fn, q, 0); |
1015 | q = text + ofs; |
1016 | } |
1017 | if (ch < 0) |
1018 | goto ret; // nothing was inserted |
1019 | // how many lines in text[]? |
1020 | li = count_lines(q, q + ch - 1); |
1021 | status_line("\"%s\"" |
1022 | IF_FEATURE_VI_READONLY("%s") |
1023 | " %dL, %dC", fn, |
1024 | IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),) |
1025 | li, ch); |
1026 | if (ch > 0) { |
1027 | // if the insert is before "dot" then we need to update |
1028 | if (q <= dot) |
1029 | dot += ch; |
1030 | /*file_modified++; - done by file_insert */ |
1031 | } |
1032 | } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args |
1033 | if (file_modified && !useforce) { |
1034 | status_line_bold("No write since last change (:rewind! overrides)"); |
1035 | } else { |
1036 | // reset the filenames to edit |
1037 | optind = fn_start - 1; |
1038 | editing = 0; |
1039 | } |
1040 | #if ENABLE_FEATURE_VI_SET |
1041 | } else if (strncmp(cmd, "set", i) == 0) { // set or clear features |
1042 | #if ENABLE_FEATURE_VI_SETOPTS |
1043 | char *argp; |
1044 | #endif |
1045 | i = 0; // offset into args |
1046 | // only blank is regarded as args delmiter. What about tab '\t' ? |
1047 | if (!args[0] || strcasecmp(args, "all") == 0) { |
1048 | // print out values of all options |
1049 | #if ENABLE_FEATURE_VI_SETOPTS |
1050 | status_line_bold( |
1051 | "%sautoindent " |
1052 | "%sflash " |
1053 | "%signorecase " |
1054 | "%sshowmatch " |
1055 | "tabstop=%u", |
1056 | autoindent ? "" : "no", |
1057 | err_method ? "" : "no", |
1058 | ignorecase ? "" : "no", |
1059 | showmatch ? "" : "no", |
1060 | tabstop |
1061 | ); |
1062 | #endif |
1063 | goto ret; |
1064 | } |
1065 | #if ENABLE_FEATURE_VI_SETOPTS |
1066 | argp = args; |
1067 | while (*argp) { |
1068 | if (strncmp(argp, "no", 2) == 0) |
1069 | i = 2; // ":set noautoindent" |
1070 | setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT); |
1071 | setops(argp, "flash " , i, "fl", VI_ERR_METHOD); |
1072 | setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE); |
1073 | setops(argp, "showmatch " , i, "sm", VI_SHOWMATCH ); |
1074 | if (strncmp(argp + i, "tabstop=", 8) == 0) { |
1075 | int t = 0; |
1076 | sscanf(argp + i+8, "%u", &t); |
1077 | if (t > 0 && t <= MAX_TABSTOP) |
1078 | tabstop = t; |
1079 | } |
1080 | argp = skip_non_whitespace(argp); |
1081 | argp = skip_whitespace(argp); |
1082 | } |
1083 | #endif /* FEATURE_VI_SETOPTS */ |
1084 | #endif /* FEATURE_VI_SET */ |
1085 | #if ENABLE_FEATURE_VI_SEARCH |
1086 | } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern |
1087 | char *ls, *F, *R; |
1088 | int gflag; |
1089 | |
1090 | // F points to the "find" pattern |
1091 | // R points to the "replace" pattern |
1092 | // replace the cmd line delimiters "/" with NULLs |
1093 | gflag = 0; // global replace flag |
1094 | c = orig_buf[1]; // what is the delimiter |
1095 | F = orig_buf + 2; // start of "find" |
1096 | R = strchr(F, c); // middle delimiter |
1097 | if (!R) |
1098 | goto colon_s_fail; |
1099 | *R++ = '\0'; // terminate "find" |
1100 | buf1 = strchr(R, c); |
1101 | if (!buf1) |
1102 | goto colon_s_fail; |
1103 | *buf1++ = '\0'; // terminate "replace" |
1104 | if (*buf1 == 'g') { // :s/foo/bar/g |
1105 | buf1++; |
1106 | gflag++; // turn on gflag |
1107 | } |
1108 | q = begin_line(q); |
1109 | if (b < 0) { // maybe :s/foo/bar/ |
1110 | q = begin_line(dot); // start with cur line |
1111 | b = count_lines(text, q); // cur line number |
1112 | } |
1113 | if (e < 0) |
1114 | e = b; // maybe :.s/foo/bar/ |
1115 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0 |
1116 | ls = q; // orig line start |
1117 | vc4: |
1118 | buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find" |
1119 | if (buf1) { |
1120 | uintptr_t bias; |
1121 | // we found the "find" pattern - delete it |
1122 | text_hole_delete(buf1, buf1 + strlen(F) - 1); |
1123 | // inset the "replace" patern |
1124 | bias = string_insert(buf1, R); // insert the string |
1125 | buf1 += bias; |
1126 | ls += bias; |
1127 | /*q += bias; - recalculated anyway */ |
1128 | // check for "global" :s/foo/bar/g |
1129 | if (gflag == 1) { |
1130 | if ((buf1 + strlen(R)) < end_line(ls)) { |
1131 | q = buf1 + strlen(R); |
1132 | goto vc4; // don't let q move past cur line |
1133 | } |
1134 | } |
1135 | } |
1136 | q = next_line(ls); |
1137 | } |
1138 | #endif /* FEATURE_VI_SEARCH */ |
1139 | } else if (strncmp(cmd, "version", i) == 0) { // show software version |
1140 | status_line(BB_VER " " BB_BT); |
1141 | } else if (strncmp(cmd, "write", i) == 0 // write text to file |
1142 | || strncmp(cmd, "wq", i) == 0 |
1143 | || strncmp(cmd, "wn", i) == 0 |
1144 | || (cmd[0] == 'x' && !cmd[1]) |
1145 | ) { |
1146 | // is there a file name to write to? |
1147 | if (args[0]) { |
1148 | fn = args; |
1149 | } |
1150 | #if ENABLE_FEATURE_VI_READONLY |
1151 | if (readonly_mode && !useforce) { |
1152 | status_line_bold("\"%s\" File is read only", fn); |
1153 | goto ret; |
1154 | } |
1155 | #endif |
1156 | // how many lines in text[]? |
1157 | li = count_lines(q, r); |
1158 | ch = r - q + 1; |
1159 | // see if file exists- if not, its just a new file request |
1160 | if (useforce) { |
1161 | // if "fn" is not write-able, chmod u+w |
1162 | // sprintf(syscmd, "chmod u+w %s", fn); |
1163 | // system(syscmd); |
1164 | forced = TRUE; |
1165 | } |
1166 | l = file_write(fn, q, r); |
1167 | if (useforce && forced) { |
1168 | // chmod u-w |
1169 | // sprintf(syscmd, "chmod u-w %s", fn); |
1170 | // system(syscmd); |
1171 | forced = FALSE; |
1172 | } |
1173 | if (l < 0) { |
1174 | if (l == -1) |
1175 | status_line_bold("\"%s\" %s", fn, strerror(errno)); |
1176 | } else { |
1177 | status_line("\"%s\" %dL, %dC", fn, li, l); |
1178 | if (q == text && r == end - 1 && l == ch) { |
1179 | file_modified = 0; |
1180 | last_file_modified = -1; |
1181 | } |
1182 | if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' |
1183 | || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N' |
1184 | ) |
1185 | && l == ch |
1186 | ) { |
1187 | editing = 0; |
1188 | } |
1189 | } |
1190 | #if ENABLE_FEATURE_VI_YANKMARK |
1191 | } else if (strncmp(cmd, "yank", i) == 0) { // yank lines |
1192 | if (b < 0) { // no addr given- use defaults |
1193 | q = begin_line(dot); // assume .,. for the range |
1194 | r = end_line(dot); |
1195 | } |
1196 | text_yank(q, r, YDreg); |
1197 | li = count_lines(q, r); |
1198 | status_line("Yank %d lines (%d chars) into [%c]", |
1199 | li, strlen(reg[YDreg]), what_reg()); |
1200 | #endif |
1201 | } else { |
1202 | // cmd unknown |
1203 | not_implemented(cmd); |
1204 | } |
1205 | ret: |
1206 | dot = bound_dot(dot); // make sure "dot" is valid |
1207 | return; |
1208 | #if ENABLE_FEATURE_VI_SEARCH |
1209 | colon_s_fail: |
1210 | status_line(":s expression missing delimiters"); |
1211 | #endif |
1212 | } |
1213 | |
1214 | #endif /* FEATURE_VI_COLON */ |
1215 | |
1216 | static void Hit_Return(void) |
1217 | { |
1218 | int c; |
1219 | |
1220 | standout_start(); |
1221 | write1("[Hit return to continue]"); |
1222 | standout_end(); |
1223 | while ((c = get_one_char()) != '\n' && c != '\r') |
1224 | continue; |
1225 | redraw(TRUE); // force redraw all |
1226 | } |
1227 | |
1228 | static int next_tabstop(int col) |
1229 | { |
1230 | return col + ((tabstop - 1) - (col % tabstop)); |
1231 | } |
1232 | |
1233 | //----- Synchronize the cursor to Dot -------------------------- |
1234 | static NOINLINE void sync_cursor(char *d, int *row, int *col) |
1235 | { |
1236 | char *beg_cur; // begin and end of "d" line |
1237 | char *tp; |
1238 | int cnt, ro, co; |
1239 | |
1240 | beg_cur = begin_line(d); // first char of cur line |
1241 | |
1242 | if (beg_cur < screenbegin) { |
1243 | // "d" is before top line on screen |
1244 | // how many lines do we have to move |
1245 | cnt = count_lines(beg_cur, screenbegin); |
1246 | sc1: |
1247 | screenbegin = beg_cur; |
1248 | if (cnt > (rows - 1) / 2) { |
1249 | // we moved too many lines. put "dot" in middle of screen |
1250 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) { |
1251 | screenbegin = prev_line(screenbegin); |
1252 | } |
1253 | } |
1254 | } else { |
1255 | char *end_scr; // begin and end of screen |
1256 | end_scr = end_screen(); // last char of screen |
1257 | if (beg_cur > end_scr) { |
1258 | // "d" is after bottom line on screen |
1259 | // how many lines do we have to move |
1260 | cnt = count_lines(end_scr, beg_cur); |
1261 | if (cnt > (rows - 1) / 2) |
1262 | goto sc1; // too many lines |
1263 | for (ro = 0; ro < cnt - 1; ro++) { |
1264 | // move screen begin the same amount |
1265 | screenbegin = next_line(screenbegin); |
1266 | // now, move the end of screen |
1267 | end_scr = next_line(end_scr); |
1268 | end_scr = end_line(end_scr); |
1269 | } |
1270 | } |
1271 | } |
1272 | // "d" is on screen- find out which row |
1273 | tp = screenbegin; |
1274 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row |
1275 | if (tp == beg_cur) |
1276 | break; |
1277 | tp = next_line(tp); |
1278 | } |
1279 | |
1280 | // find out what col "d" is on |
1281 | co = 0; |
1282 | while (tp < d) { // drive "co" to correct column |
1283 | if (*tp == '\n') //vda || *tp == '\0') |
1284 | break; |
1285 | if (*tp == '\t') { |
1286 | // handle tabs like real vi |
1287 | if (d == tp && cmd_mode) { |
1288 | break; |
1289 | } |
1290 | co = next_tabstop(co); |
1291 | } else if ((unsigned char)*tp < ' ' || *tp == 0x7f) { |
1292 | co++; // display as ^X, use 2 columns |
1293 | } |
1294 | co++; |
1295 | tp++; |
1296 | } |
1297 | |
1298 | // "co" is the column where "dot" is. |
1299 | // The screen has "columns" columns. |
1300 | // The currently displayed columns are 0+offset -- columns+ofset |
1301 | // |-------------------------------------------------------------| |
1302 | // ^ ^ ^ |
1303 | // offset | |------- columns ----------------| |
1304 | // |
1305 | // If "co" is already in this range then we do not have to adjust offset |
1306 | // but, we do have to subtract the "offset" bias from "co". |
1307 | // If "co" is outside this range then we have to change "offset". |
1308 | // If the first char of a line is a tab the cursor will try to stay |
1309 | // in column 7, but we have to set offset to 0. |
1310 | |
1311 | if (co < 0 + offset) { |
1312 | offset = co; |
1313 | } |
1314 | if (co >= columns + offset) { |
1315 | offset = co - columns + 1; |
1316 | } |
1317 | // if the first char of the line is a tab, and "dot" is sitting on it |
1318 | // force offset to 0. |
1319 | if (d == beg_cur && *d == '\t') { |
1320 | offset = 0; |
1321 | } |
1322 | co -= offset; |
1323 | |
1324 | *row = ro; |
1325 | *col = co; |
1326 | } |
1327 | |
1328 | //----- Text Movement Routines --------------------------------- |
1329 | static char *begin_line(char *p) // return pointer to first char cur line |
1330 | { |
1331 | if (p > text) { |
1332 | p = memrchr(text, '\n', p - text); |
1333 | if (!p) |
1334 | return text; |
1335 | return p + 1; |
1336 | } |
1337 | return p; |
1338 | } |
1339 | |
1340 | static char *end_line(char *p) // return pointer to NL of cur line |
1341 | { |
1342 | if (p < end - 1) { |
1343 | p = memchr(p, '\n', end - p - 1); |
1344 | if (!p) |
1345 | return end - 1; |
1346 | } |
1347 | return p; |
1348 | } |
1349 | |
1350 | static char *dollar_line(char *p) // return pointer to just before NL line |
1351 | { |
1352 | p = end_line(p); |
1353 | // Try to stay off of the Newline |
1354 | if (*p == '\n' && (p - begin_line(p)) > 0) |
1355 | p--; |
1356 | return p; |
1357 | } |
1358 | |
1359 | static char *prev_line(char *p) // return pointer first char prev line |
1360 | { |
1361 | p = begin_line(p); // goto begining of cur line |
1362 | if (p > text && p[-1] == '\n') |
1363 | p--; // step to prev line |
1364 | p = begin_line(p); // goto begining of prev line |
1365 | return p; |
1366 | } |
1367 | |
1368 | static char *next_line(char *p) // return pointer first char next line |
1369 | { |
1370 | p = end_line(p); |
1371 | if (p < end - 1 && *p == '\n') |
1372 | p++; // step to next line |
1373 | return p; |
1374 | } |
1375 | |
1376 | //----- Text Information Routines ------------------------------ |
1377 | static char *end_screen(void) |
1378 | { |
1379 | char *q; |
1380 | int cnt; |
1381 | |
1382 | // find new bottom line |
1383 | q = screenbegin; |
1384 | for (cnt = 0; cnt < rows - 2; cnt++) |
1385 | q = next_line(q); |
1386 | q = end_line(q); |
1387 | return q; |
1388 | } |
1389 | |
1390 | // count line from start to stop |
1391 | static int count_lines(char *start, char *stop) |
1392 | { |
1393 | char *q; |
1394 | int cnt; |
1395 | |
1396 | if (stop < start) { // start and stop are backwards- reverse them |
1397 | q = start; |
1398 | start = stop; |
1399 | stop = q; |
1400 | } |
1401 | cnt = 0; |
1402 | stop = end_line(stop); |
1403 | while (start <= stop && start <= end - 1) { |
1404 | start = end_line(start); |
1405 | if (*start == '\n') |
1406 | cnt++; |
1407 | start++; |
1408 | } |
1409 | return cnt; |
1410 | } |
1411 | |
1412 | static char *find_line(int li) // find begining of line #li |
1413 | { |
1414 | char *q; |
1415 | |
1416 | for (q = text; li > 1; li--) { |
1417 | q = next_line(q); |
1418 | } |
1419 | return q; |
1420 | } |
1421 | |
1422 | //----- Dot Movement Routines ---------------------------------- |
1423 | static void dot_left(void) |
1424 | { |
1425 | if (dot > text && dot[-1] != '\n') |
1426 | dot--; |
1427 | } |
1428 | |
1429 | static void dot_right(void) |
1430 | { |
1431 | if (dot < end - 1 && *dot != '\n') |
1432 | dot++; |
1433 | } |
1434 | |
1435 | static void dot_begin(void) |
1436 | { |
1437 | dot = begin_line(dot); // return pointer to first char cur line |
1438 | } |
1439 | |
1440 | static void dot_end(void) |
1441 | { |
1442 | dot = end_line(dot); // return pointer to last char cur line |
1443 | } |
1444 | |
1445 | static char *move_to_col(char *p, int l) |
1446 | { |
1447 | int co; |
1448 | |
1449 | p = begin_line(p); |
1450 | co = 0; |
1451 | while (co < l && p < end) { |
1452 | if (*p == '\n') //vda || *p == '\0') |
1453 | break; |
1454 | if (*p == '\t') { |
1455 | co = next_tabstop(co); |
1456 | } else if (*p < ' ' || *p == 127) { |
1457 | co++; // display as ^X, use 2 columns |
1458 | } |
1459 | co++; |
1460 | p++; |
1461 | } |
1462 | return p; |
1463 | } |
1464 | |
1465 | static void dot_next(void) |
1466 | { |
1467 | dot = next_line(dot); |
1468 | } |
1469 | |
1470 | static void dot_prev(void) |
1471 | { |
1472 | dot = prev_line(dot); |
1473 | } |
1474 | |
1475 | static void dot_scroll(int cnt, int dir) |
1476 | { |
1477 | char *q; |
1478 | |
1479 | for (; cnt > 0; cnt--) { |
1480 | if (dir < 0) { |
1481 | // scroll Backwards |
1482 | // ctrl-Y scroll up one line |
1483 | screenbegin = prev_line(screenbegin); |
1484 | } else { |
1485 | // scroll Forwards |
1486 | // ctrl-E scroll down one line |
1487 | screenbegin = next_line(screenbegin); |
1488 | } |
1489 | } |
1490 | // make sure "dot" stays on the screen so we dont scroll off |
1491 | if (dot < screenbegin) |
1492 | dot = screenbegin; |
1493 | q = end_screen(); // find new bottom line |
1494 | if (dot > q) |
1495 | dot = begin_line(q); // is dot is below bottom line? |
1496 | dot_skip_over_ws(); |
1497 | } |
1498 | |
1499 | static void dot_skip_over_ws(void) |
1500 | { |
1501 | // skip WS |
1502 | while (isspace(*dot) && *dot != '\n' && dot < end - 1) |
1503 | dot++; |
1504 | } |
1505 | |
1506 | static void dot_delete(void) // delete the char at 'dot' |
1507 | { |
1508 | text_hole_delete(dot, dot); |
1509 | } |
1510 | |
1511 | static char *bound_dot(char *p) // make sure text[0] <= P < "end" |
1512 | { |
1513 | if (p >= end && end > text) { |
1514 | p = end - 1; |
1515 | indicate_error('1'); |
1516 | } |
1517 | if (p < text) { |
1518 | p = text; |
1519 | indicate_error('2'); |
1520 | } |
1521 | return p; |
1522 | } |
1523 | |
1524 | //----- Helper Utility Routines -------------------------------- |
1525 | |
1526 | //---------------------------------------------------------------- |
1527 | //----- Char Routines -------------------------------------------- |
1528 | /* Chars that are part of a word- |
1529 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz |
1530 | * Chars that are Not part of a word (stoppers) |
1531 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~ |
1532 | * Chars that are WhiteSpace |
1533 | * TAB NEWLINE VT FF RETURN SPACE |
1534 | * DO NOT COUNT NEWLINE AS WHITESPACE |
1535 | */ |
1536 | |
1537 | static char *new_screen(int ro, int co) |
1538 | { |
1539 | int li; |
1540 | |
1541 | free(screen); |
1542 | screensize = ro * co + 8; |
1543 | screen = xmalloc(screensize); |
1544 | // initialize the new screen. assume this will be a empty file. |
1545 | screen_erase(); |
1546 | // non-existent text[] lines start with a tilde (~). |
1547 | for (li = 1; li < ro - 1; li++) { |
1548 | screen[(li * co) + 0] = '~'; |
1549 | } |
1550 | return screen; |
1551 | } |
1552 | |
1553 | #if ENABLE_FEATURE_VI_SEARCH |
1554 | static int mycmp(const char *s1, const char *s2, int len) |
1555 | { |
1556 | if (ENABLE_FEATURE_VI_SETOPTS && ignorecase) { |
1557 | return strncasecmp(s1, s2, len); |
1558 | } |
1559 | return strncmp(s1, s2, len); |
1560 | } |
1561 | |
1562 | // search for pattern starting at p |
1563 | static char *char_search(char *p, const char *pat, int dir, int range) |
1564 | { |
1565 | #ifndef REGEX_SEARCH |
1566 | char *start, *stop; |
1567 | int len; |
1568 | |
1569 | len = strlen(pat); |
1570 | if (dir == FORWARD) { |
1571 | stop = end - 1; // assume range is p - end-1 |
1572 | if (range == LIMITED) |
1573 | stop = next_line(p); // range is to next line |
1574 | for (start = p; start < stop; start++) { |
1575 | if (mycmp(start, pat, len) == 0) { |
1576 | return start; |
1577 | } |
1578 | } |
1579 | } else if (dir == BACK) { |
1580 | stop = text; // assume range is text - p |
1581 | if (range == LIMITED) |
1582 | stop = prev_line(p); // range is to prev line |
1583 | for (start = p - len; start >= stop; start--) { |
1584 | if (mycmp(start, pat, len) == 0) { |
1585 | return start; |
1586 | } |
1587 | } |
1588 | } |
1589 | // pattern not found |
1590 | return NULL; |
1591 | #else /* REGEX_SEARCH */ |
1592 | char *q; |
1593 | struct re_pattern_buffer preg; |
1594 | int i; |
1595 | int size, range; |
1596 | |
1597 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED; |
1598 | preg.translate = 0; |
1599 | preg.fastmap = 0; |
1600 | preg.buffer = 0; |
1601 | preg.allocated = 0; |
1602 | |
1603 | // assume a LIMITED forward search |
1604 | q = next_line(p); |
1605 | q = end_line(q); |
1606 | q = end - 1; |
1607 | if (dir == BACK) { |
1608 | q = prev_line(p); |
1609 | q = text; |
1610 | } |
1611 | // count the number of chars to search over, forward or backward |
1612 | size = q - p; |
1613 | if (size < 0) |
1614 | size = p - q; |
1615 | // RANGE could be negative if we are searching backwards |
1616 | range = q - p; |
1617 | |
1618 | q = re_compile_pattern(pat, strlen(pat), &preg); |
1619 | if (q != 0) { |
1620 | // The pattern was not compiled |
1621 | status_line_bold("bad search pattern: \"%s\": %s", pat, q); |
1622 | i = 0; // return p if pattern not compiled |
1623 | goto cs1; |
1624 | } |
1625 | |
1626 | q = p; |
1627 | if (range < 0) { |
1628 | q = p - size; |
1629 | if (q < text) |
1630 | q = text; |
1631 | } |
1632 | // search for the compiled pattern, preg, in p[] |
1633 | // range < 0- search backward |
1634 | // range > 0- search forward |
1635 | // 0 < start < size |
1636 | // re_search() < 0 not found or error |
1637 | // re_search() > 0 index of found pattern |
1638 | // struct pattern char int int int struct reg |
1639 | // re_search (*pattern_buffer, *string, size, start, range, *regs) |
1640 | i = re_search(&preg, q, size, 0, range, 0); |
1641 | if (i == -1) { |
1642 | p = 0; |
1643 | i = 0; // return NULL if pattern not found |
1644 | } |
1645 | cs1: |
1646 | if (dir == FORWARD) { |
1647 | p = p + i; |
1648 | } else { |
1649 | p = p - i; |
1650 | } |
1651 | return p; |
1652 | #endif /* REGEX_SEARCH */ |
1653 | } |
1654 | #endif /* FEATURE_VI_SEARCH */ |
1655 | |
1656 | static char *char_insert(char *p, char c) // insert the char c at 'p' |
1657 | { |
1658 | if (c == 22) { // Is this an ctrl-V? |
1659 | p += stupid_insert(p, '^'); // use ^ to indicate literal next |
1660 | refresh(FALSE); // show the ^ |
1661 | c = get_one_char(); |
1662 | *p = c; |
1663 | p++; |
1664 | file_modified++; |
1665 | } else if (c == 27) { // Is this an ESC? |
1666 | cmd_mode = 0; |
1667 | cmdcnt = 0; |
1668 | end_cmd_q(); // stop adding to q |
1669 | last_status_cksum = 0; // force status update |
1670 | if ((p[-1] != '\n') && (dot > text)) { |
1671 | p--; |
1672 | } |
1673 | } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS |
1674 | // 123456789 |
1675 | if ((p[-1] != '\n') && (dot>text)) { |
1676 | p--; |
1677 | p = text_hole_delete(p, p); // shrink buffer 1 char |
1678 | } |
1679 | } else { |
1680 | // insert a char into text[] |
1681 | char *sp; // "save p" |
1682 | |
1683 | if (c == 13) |
1684 | c = '\n'; // translate \r to \n |
1685 | sp = p; // remember addr of insert |
1686 | p += 1 + stupid_insert(p, c); // insert the char |
1687 | #if ENABLE_FEATURE_VI_SETOPTS |
1688 | if (showmatch && strchr(")]}", *sp) != NULL) { |
1689 | showmatching(sp); |
1690 | } |
1691 | if (autoindent && c == '\n') { // auto indent the new line |
1692 | char *q; |
1693 | size_t len; |
1694 | q = prev_line(p); // use prev line as template |
1695 | len = strspn(q, " \t"); // space or tab |
1696 | if (len) { |
1697 | uintptr_t bias; |
1698 | bias = text_hole_make(p, len); |
1699 | p += bias; |
1700 | q += bias; |
1701 | memcpy(p, q, len); |
1702 | p += len; |
1703 | } |
1704 | } |
1705 | #endif |
1706 | } |
1707 | return p; |
1708 | } |
1709 | |
1710 | // might reallocate text[]! use p += stupid_insert(p, ...), |
1711 | // and be careful to not use pointers into potentially freed text[]! |
1712 | static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p' |
1713 | { |
1714 | uintptr_t bias; |
1715 | bias = text_hole_make(p, 1); |
1716 | p += bias; |
1717 | *p = c; |
1718 | //file_modified++; - done by text_hole_make() |
1719 | return bias; |
1720 | } |
1721 | |
1722 | static int find_range(char **start, char **stop, char c) |
1723 | { |
1724 | char *save_dot, *p, *q, *t; |
1725 | int cnt, multiline = 0; |
1726 | |
1727 | save_dot = dot; |
1728 | p = q = dot; |
1729 | |
1730 | if (strchr("cdy><", c)) { |
1731 | // these cmds operate on whole lines |
1732 | p = q = begin_line(p); |
1733 | for (cnt = 1; cnt < cmdcnt; cnt++) { |
1734 | q = next_line(q); |
1735 | } |
1736 | q = end_line(q); |
1737 | } else if (strchr("^%$0bBeEfth\b\177", c)) { |
1738 | // These cmds operate on char positions |
1739 | do_cmd(c); // execute movement cmd |
1740 | q = dot; |
1741 | } else if (strchr("wW", c)) { |
1742 | do_cmd(c); // execute movement cmd |
1743 | // if we are at the next word's first char |
1744 | // step back one char |
1745 | // but check the possibilities when it is true |
1746 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0])) |
1747 | || (ispunct(dot[-1]) && !ispunct(dot[0])) |
1748 | || (isalnum(dot[-1]) && !isalnum(dot[0])))) |
1749 | dot--; // move back off of next word |
1750 | if (dot > text && *dot == '\n') |
1751 | dot--; // stay off NL |
1752 | q = dot; |
1753 | } else if (strchr("H-k{", c)) { |
1754 | // these operate on multi-lines backwards |
1755 | q = end_line(dot); // find NL |
1756 | do_cmd(c); // execute movement cmd |
1757 | dot_begin(); |
1758 | p = dot; |
1759 | } else if (strchr("L+j}\r\n", c)) { |
1760 | // these operate on multi-lines forwards |
1761 | p = begin_line(dot); |
1762 | do_cmd(c); // execute movement cmd |
1763 | dot_end(); // find NL |
1764 | q = dot; |
1765 | } else { |
1766 | // nothing -- this causes any other values of c to |
1767 | // represent the one-character range under the |
1768 | // cursor. this is correct for ' ' and 'l', but |
1769 | // perhaps no others. |
1770 | // |
1771 | } |
1772 | if (q < p) { |
1773 | t = q; |
1774 | q = p; |
1775 | p = t; |
1776 | } |
1777 | |
1778 | // backward char movements don't include start position |
1779 | if (q > p && strchr("^0bBh\b\177", c)) q--; |
1780 | |
1781 | multiline = 0; |
1782 | for (t = p; t <= q; t++) { |
1783 | if (*t == '\n') { |
1784 | multiline = 1; |
1785 | break; |
1786 | } |
1787 | } |
1788 | |
1789 | *start = p; |
1790 | *stop = q; |
1791 | dot = save_dot; |
1792 | return multiline; |
1793 | } |
1794 | |
1795 | static int st_test(char *p, int type, int dir, char *tested) |
1796 | { |
1797 | char c, c0, ci; |
1798 | int test, inc; |
1799 | |
1800 | inc = dir; |
1801 | c = c0 = p[0]; |
1802 | ci = p[inc]; |
1803 | test = 0; |
1804 | |
1805 | if (type == S_BEFORE_WS) { |
1806 | c = ci; |
1807 | test = (!isspace(c) || c == '\n'); |
1808 | } |
1809 | if (type == S_TO_WS) { |
1810 | c = c0; |
1811 | test = (!isspace(c) || c == '\n'); |
1812 | } |
1813 | if (type == S_OVER_WS) { |
1814 | c = c0; |
1815 | test = isspace(c); |
1816 | } |
1817 | if (type == S_END_PUNCT) { |
1818 | c = ci; |
1819 | test = ispunct(c); |
1820 | } |
1821 | if (type == S_END_ALNUM) { |
1822 | c = ci; |
1823 | test = (isalnum(c) || c == '_'); |
1824 | } |
1825 | *tested = c; |
1826 | return test; |
1827 | } |
1828 | |
1829 | static char *skip_thing(char *p, int linecnt, int dir, int type) |
1830 | { |
1831 | char c; |
1832 | |
1833 | while (st_test(p, type, dir, &c)) { |
1834 | // make sure we limit search to correct number of lines |
1835 | if (c == '\n' && --linecnt < 1) |
1836 | break; |
1837 | if (dir >= 0 && p >= end - 1) |
1838 | break; |
1839 | if (dir < 0 && p <= text) |
1840 | break; |
1841 | p += dir; // move to next char |
1842 | } |
1843 | return p; |
1844 | } |
1845 | |
1846 | // find matching char of pair () [] {} |
1847 | static char *find_pair(char *p, const char c) |
1848 | { |
1849 | char match, *q; |
1850 | int dir, level; |
1851 | |
1852 | match = ')'; |
1853 | level = 1; |
1854 | dir = 1; // assume forward |
1855 | switch (c) { |
1856 | case '(': match = ')'; break; |
1857 | case '[': match = ']'; break; |
1858 | case '{': match = '}'; break; |
1859 | case ')': match = '('; dir = -1; break; |
1860 | case ']': match = '['; dir = -1; break; |
1861 | case '}': match = '{'; dir = -1; break; |
1862 | } |
1863 | for (q = p + dir; text <= q && q < end; q += dir) { |
1864 | // look for match, count levels of pairs (( )) |
1865 | if (*q == c) |
1866 | level++; // increase pair levels |
1867 | if (*q == match) |
1868 | level--; // reduce pair level |
1869 | if (level == 0) |
1870 | break; // found matching pair |
1871 | } |
1872 | if (level != 0) |
1873 | q = NULL; // indicate no match |
1874 | return q; |
1875 | } |
1876 | |
1877 | #if ENABLE_FEATURE_VI_SETOPTS |
1878 | // show the matching char of a pair, () [] {} |
1879 | static void showmatching(char *p) |
1880 | { |
1881 | char *q, *save_dot; |
1882 | |
1883 | // we found half of a pair |
1884 | q = find_pair(p, *p); // get loc of matching char |
1885 | if (q == NULL) { |
1886 | indicate_error('3'); // no matching char |
1887 | } else { |
1888 | // "q" now points to matching pair |
1889 | save_dot = dot; // remember where we are |
1890 | dot = q; // go to new loc |
1891 | refresh(FALSE); // let the user see it |
1892 | mysleep(40); // give user some time |
1893 | dot = save_dot; // go back to old loc |
1894 | refresh(FALSE); |
1895 | } |
1896 | } |
1897 | #endif /* FEATURE_VI_SETOPTS */ |
1898 | |
1899 | // open a hole in text[] |
1900 | // might reallocate text[]! use p += text_hole_make(p, ...), |
1901 | // and be careful to not use pointers into potentially freed text[]! |
1902 | static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole |
1903 | { |
1904 | uintptr_t bias = 0; |
1905 | |
1906 | if (size <= 0) |
1907 | return bias; |
1908 | end += size; // adjust the new END |
1909 | if (end >= (text + text_size)) { |
1910 | char *new_text; |
1911 | text_size += end - (text + text_size) + 10240; |
1912 | new_text = xrealloc(text, text_size); |
1913 | bias = (new_text - text); |
1914 | screenbegin += bias; |
1915 | dot += bias; |
1916 | end += bias; |
1917 | p += bias; |
1918 | text = new_text; |
1919 | } |
1920 | memmove(p + size, p, end - size - p); |
1921 | memset(p, ' ', size); // clear new hole |
1922 | file_modified++; |
1923 | return bias; |
1924 | } |
1925 | |
1926 | // close a hole in text[] |
1927 | static char *text_hole_delete(char *p, char *q) // delete "p" through "q", inclusive |
1928 | { |
1929 | char *src, *dest; |
1930 | int cnt, hole_size; |
1931 | |
1932 | // move forwards, from beginning |
1933 | // assume p <= q |
1934 | src = q + 1; |
1935 | dest = p; |
1936 | if (q < p) { // they are backward- swap them |
1937 | src = p + 1; |
1938 | dest = q; |
1939 | } |
1940 | hole_size = q - p + 1; |
1941 | cnt = end - src; |
1942 | if (src < text || src > end) |
1943 | goto thd0; |
1944 | if (dest < text || dest >= end) |
1945 | goto thd0; |
1946 | if (src >= end) |
1947 | goto thd_atend; // just delete the end of the buffer |
1948 | memmove(dest, src, cnt); |
1949 | thd_atend: |
1950 | end = end - hole_size; // adjust the new END |
1951 | if (dest >= end) |
1952 | dest = end - 1; // make sure dest in below end-1 |
1953 | if (end <= text) |
1954 | dest = end = text; // keep pointers valid |
1955 | file_modified++; |
1956 | thd0: |
1957 | return dest; |
1958 | } |
1959 | |
1960 | // copy text into register, then delete text. |
1961 | // if dist <= 0, do not include, or go past, a NewLine |
1962 | // |
1963 | static char *yank_delete(char *start, char *stop, int dist, int yf) |
1964 | { |
1965 | char *p; |
1966 | |
1967 | // make sure start <= stop |
1968 | if (start > stop) { |
1969 | // they are backwards, reverse them |
1970 | p = start; |
1971 | start = stop; |
1972 | stop = p; |
1973 | } |
1974 | if (dist <= 0) { |
1975 | // we cannot cross NL boundaries |
1976 | p = start; |
1977 | if (*p == '\n') |
1978 | return p; |
1979 | // dont go past a NewLine |
1980 | for (; p + 1 <= stop; p++) { |
1981 | if (p[1] == '\n') { |
1982 | stop = p; // "stop" just before NewLine |
1983 | break; |
1984 | } |
1985 | } |
1986 | } |
1987 | p = start; |
1988 | #if ENABLE_FEATURE_VI_YANKMARK |
1989 | text_yank(start, stop, YDreg); |
1990 | #endif |
1991 | if (yf == YANKDEL) { |
1992 | p = text_hole_delete(start, stop); |
1993 | } // delete lines |
1994 | return p; |
1995 | } |
1996 | |
1997 | static void show_help(void) |
1998 | { |
1999 | puts("These features are available:" |
2000 | #if ENABLE_FEATURE_VI_SEARCH |
2001 | "\n\tPattern searches with / and ?" |
2002 | #endif |
2003 | #if ENABLE_FEATURE_VI_DOT_CMD |
2004 | "\n\tLast command repeat with \'.\'" |
2005 | #endif |
2006 | #if ENABLE_FEATURE_VI_YANKMARK |
2007 | "\n\tLine marking with 'x" |
2008 | "\n\tNamed buffers with \"x" |
2009 | #endif |
2010 | #if ENABLE_FEATURE_VI_READONLY |
2011 | "\n\tReadonly if vi is called as \"view\"" |
2012 | "\n\tReadonly with -R command line arg" |
2013 | #endif |
2014 | #if ENABLE_FEATURE_VI_SET |
2015 | "\n\tSome colon mode commands with \':\'" |
2016 | #endif |
2017 | #if ENABLE_FEATURE_VI_SETOPTS |
2018 | "\n\tSettable options with \":set\"" |
2019 | #endif |
2020 | #if ENABLE_FEATURE_VI_USE_SIGNALS |
2021 | "\n\tSignal catching- ^C" |
2022 | "\n\tJob suspend and resume with ^Z" |
2023 | #endif |
2024 | #if ENABLE_FEATURE_VI_WIN_RESIZE |
2025 | "\n\tAdapt to window re-sizes" |
2026 | #endif |
2027 | ); |
2028 | } |
2029 | |
2030 | #if ENABLE_FEATURE_VI_DOT_CMD |
2031 | static void start_new_cmd_q(char c) |
2032 | { |
2033 | // get buffer for new cmd |
2034 | // if there is a current cmd count put it in the buffer first |
2035 | if (cmdcnt > 0) { |
2036 | lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c); |
2037 | } else { // just save char c onto queue |
2038 | last_modifying_cmd[0] = c; |
2039 | lmc_len = 1; |
2040 | } |
2041 | adding2q = 1; |
2042 | } |
2043 | |
2044 | static void end_cmd_q(void) |
2045 | { |
2046 | #if ENABLE_FEATURE_VI_YANKMARK |
2047 | YDreg = 26; // go back to default Yank/Delete reg |
2048 | #endif |
2049 | adding2q = 0; |
2050 | } |
2051 | #endif /* FEATURE_VI_DOT_CMD */ |
2052 | |
2053 | #if ENABLE_FEATURE_VI_YANKMARK \ |
2054 | || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \ |
2055 | || ENABLE_FEATURE_VI_CRASHME |
2056 | // might reallocate text[]! use p += string_insert(p, ...), |
2057 | // and be careful to not use pointers into potentially freed text[]! |
2058 | static uintptr_t string_insert(char *p, const char *s) // insert the string at 'p' |
2059 | { |
2060 | uintptr_t bias; |
2061 | int i; |
2062 | |
2063 | i = strlen(s); |
2064 | bias = text_hole_make(p, i); |
2065 | p += bias; |
2066 | memcpy(p, s, i); |
2067 | #if ENABLE_FEATURE_VI_YANKMARK |
2068 | { |
2069 | int cnt; |
2070 | for (cnt = 0; *s != '\0'; s++) { |
2071 | if (*s == '\n') |
2072 | cnt++; |
2073 | } |
2074 | status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg()); |
2075 | } |
2076 | #endif |
2077 | return bias; |
2078 | } |
2079 | #endif |
2080 | |
2081 | #if ENABLE_FEATURE_VI_YANKMARK |
2082 | static char *text_yank(char *p, char *q, int dest) // copy text into a register |
2083 | { |
2084 | int cnt = q - p; |
2085 | if (cnt < 0) { // they are backwards- reverse them |
2086 | p = q; |
2087 | cnt = -cnt; |
2088 | } |
2089 | free(reg[dest]); // if already a yank register, free it |
2090 | reg[dest] = xstrndup(p, cnt + 1); |
2091 | return p; |
2092 | } |
2093 | |
2094 | static char what_reg(void) |
2095 | { |
2096 | char c; |
2097 | |
2098 | c = 'D'; // default to D-reg |
2099 | if (0 <= YDreg && YDreg <= 25) |
2100 | c = 'a' + (char) YDreg; |
2101 | if (YDreg == 26) |
2102 | c = 'D'; |
2103 | if (YDreg == 27) |
2104 | c = 'U'; |
2105 | return c; |
2106 | } |
2107 | |
2108 | static void check_context(char cmd) |
2109 | { |
2110 | // A context is defined to be "modifying text" |
2111 | // Any modifying command establishes a new context. |
2112 | |
2113 | if (dot < context_start || dot > context_end) { |
2114 | if (strchr(modifying_cmds, cmd) != NULL) { |
2115 | // we are trying to modify text[]- make this the current context |
2116 | mark[27] = mark[26]; // move cur to prev |
2117 | mark[26] = dot; // move local to cur |
2118 | context_start = prev_line(prev_line(dot)); |
2119 | context_end = next_line(next_line(dot)); |
2120 | //loiter= start_loiter= now; |
2121 | } |
2122 | } |
2123 | } |
2124 | |
2125 | static char *swap_context(char *p) // goto new context for '' command make this the current context |
2126 | { |
2127 | char *tmp; |
2128 | |
2129 | // the current context is in mark[26] |
2130 | // the previous context is in mark[27] |
2131 | // only swap context if other context is valid |
2132 | if (text <= mark[27] && mark[27] <= end - 1) { |
2133 | tmp = mark[27]; |
2134 | mark[27] = mark[26]; |
2135 | mark[26] = tmp; |
2136 | p = mark[26]; // where we are going- previous context |
2137 | context_start = prev_line(prev_line(prev_line(p))); |
2138 | context_end = next_line(next_line(next_line(p))); |
2139 | } |
2140 | return p; |
2141 | } |
2142 | #endif /* FEATURE_VI_YANKMARK */ |
2143 | |
2144 | //----- Set terminal attributes -------------------------------- |
2145 | static void rawmode(void) |
2146 | { |
2147 | tcgetattr(0, &term_orig); |
2148 | term_vi = term_orig; |
2149 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's |
2150 | term_vi.c_iflag &= (~IXON & ~ICRNL); |
2151 | term_vi.c_oflag &= (~ONLCR); |
2152 | term_vi.c_cc[VMIN] = 1; |
2153 | term_vi.c_cc[VTIME] = 0; |
2154 | erase_char = term_vi.c_cc[VERASE]; |
2155 | tcsetattr_stdin_TCSANOW(&term_vi); |
2156 | } |
2157 | |
2158 | static void cookmode(void) |
2159 | { |
2160 | fflush_all(); |
2161 | tcsetattr_stdin_TCSANOW(&term_orig); |
2162 | } |
2163 | |
2164 | #if ENABLE_FEATURE_VI_USE_SIGNALS |
2165 | //----- Come here when we get a window resize signal --------- |
2166 | static void winch_sig(int sig UNUSED_PARAM) |
2167 | { |
2168 | int save_errno = errno; |
2169 | // FIXME: do it in main loop!!! |
2170 | signal(SIGWINCH, winch_sig); |
2171 | query_screen_dimensions(); |
2172 | new_screen(rows, columns); // get memory for virtual screen |
2173 | redraw(TRUE); // re-draw the screen |
2174 | errno = save_errno; |
2175 | } |
2176 | |
2177 | //----- Come here when we get a continue signal ------------------- |
2178 | static void cont_sig(int sig UNUSED_PARAM) |
2179 | { |
2180 | int save_errno = errno; |
2181 | rawmode(); // terminal to "raw" |
2182 | last_status_cksum = 0; // force status update |
2183 | redraw(TRUE); // re-draw the screen |
2184 | |
2185 | signal(SIGTSTP, suspend_sig); |
2186 | signal(SIGCONT, SIG_DFL); |
2187 | //kill(my_pid, SIGCONT); // huh? why? we are already "continued"... |
2188 | errno = save_errno; |
2189 | } |
2190 | |
2191 | //----- Come here when we get a Suspend signal ------------------- |
2192 | static void suspend_sig(int sig UNUSED_PARAM) |
2193 | { |
2194 | int save_errno = errno; |
2195 | go_bottom_and_clear_to_eol(); |
2196 | cookmode(); // terminal to "cooked" |
2197 | |
2198 | signal(SIGCONT, cont_sig); |
2199 | signal(SIGTSTP, SIG_DFL); |
2200 | kill(my_pid, SIGTSTP); |
2201 | errno = save_errno; |
2202 | } |
2203 | |
2204 | //----- Come here when we get a signal --------------------------- |
2205 | static void catch_sig(int sig) |
2206 | { |
2207 | signal(SIGINT, catch_sig); |
2208 | siglongjmp(restart, sig); |
2209 | } |
2210 | #endif /* FEATURE_VI_USE_SIGNALS */ |
2211 | |
2212 | static int mysleep(int hund) // sleep for 'hund' 1/100 seconds or stdin ready |
2213 | { |
2214 | struct pollfd pfd[1]; |
2215 | |
2216 | pfd[0].fd = STDIN_FILENO; |
2217 | pfd[0].events = POLLIN; |
2218 | return safe_poll(pfd, 1, hund*10) > 0; |
2219 | } |
2220 | |
2221 | //----- IO Routines -------------------------------------------- |
2222 | static int readit(void) // read (maybe cursor) key from stdin |
2223 | { |
2224 | int c; |
2225 | |
2226 | fflush_all(); |
2227 | c = read_key(STDIN_FILENO, readbuffer, /*timeout off:*/ -2); |
2228 | if (c == -1) { // EOF/error |
2229 | go_bottom_and_clear_to_eol(); |
2230 | cookmode(); // terminal to "cooked" |
2231 | bb_error_msg_and_die("can't read user input"); |
2232 | } |
2233 | return c; |
2234 | } |
2235 | |
2236 | //----- IO Routines -------------------------------------------- |
2237 | static int get_one_char(void) |
2238 | { |
2239 | int c; |
2240 | |
2241 | #if ENABLE_FEATURE_VI_DOT_CMD |
2242 | if (!adding2q) { |
2243 | // we are not adding to the q. |
2244 | // but, we may be reading from a q |
2245 | if (ioq == 0) { |
2246 | // there is no current q, read from STDIN |
2247 | c = readit(); // get the users input |
2248 | } else { |
2249 | // there is a queue to get chars from first |
2250 | // careful with correct sign expansion! |
2251 | c = (unsigned char)*ioq++; |
2252 | if (c == '\0') { |
2253 | // the end of the q, read from STDIN |
2254 | free(ioq_start); |
2255 | ioq_start = ioq = 0; |
2256 | c = readit(); // get the users input |
2257 | } |
2258 | } |
2259 | } else { |
2260 | // adding STDIN chars to q |
2261 | c = readit(); // get the users input |
2262 | if (lmc_len >= MAX_INPUT_LEN - 1) { |
2263 | status_line_bold("last_modifying_cmd overrun"); |
2264 | } else { |
2265 | // add new char to q |
2266 | last_modifying_cmd[lmc_len++] = c; |
2267 | } |
2268 | } |
2269 | #else |
2270 | c = readit(); // get the users input |
2271 | #endif /* FEATURE_VI_DOT_CMD */ |
2272 | return c; |
2273 | } |
2274 | |
2275 | // Get input line (uses "status line" area) |
2276 | static char *get_input_line(const char *prompt) |
2277 | { |
2278 | // char [MAX_INPUT_LEN] |
2279 | #define buf get_input_line__buf |
2280 | |
2281 | int c; |
2282 | int i; |
2283 | |
2284 | strcpy(buf, prompt); |
2285 | last_status_cksum = 0; // force status update |
2286 | go_bottom_and_clear_to_eol(); |
2287 | write1(prompt); // write out the :, /, or ? prompt |
2288 | |
2289 | i = strlen(buf); |
2290 | while (i < MAX_INPUT_LEN) { |
2291 | c = get_one_char(); |
2292 | if (c == '\n' || c == '\r' || c == 27) |
2293 | break; // this is end of input |
2294 | if (c == erase_char || c == 8 || c == 127) { |
2295 | // user wants to erase prev char |
2296 | buf[--i] = '\0'; |
2297 | write1("\b \b"); // erase char on screen |
2298 | if (i <= 0) // user backs up before b-o-l, exit |
2299 | break; |
2300 | } else if (c > 0 && c < 256) { // exclude Unicode |
2301 | // (TODO: need to handle Unicode) |
2302 | buf[i] = c; |
2303 | buf[++i] = '\0'; |
2304 | bb_putchar(c); |
2305 | } |
2306 | } |
2307 | refresh(FALSE); |
2308 | return buf; |
2309 | #undef buf |
2310 | } |
2311 | |
2312 | static int file_size(const char *fn) // what is the byte size of "fn" |
2313 | { |
2314 | struct stat st_buf; |
2315 | int cnt; |
2316 | |
2317 | cnt = -1; |
2318 | if (fn && stat(fn, &st_buf) == 0) // see if file exists |
2319 | cnt = (int) st_buf.st_size; |
2320 | return cnt; |
2321 | } |
2322 | |
2323 | // might reallocate text[]! |
2324 | static int file_insert(const char *fn, char *p, int update_ro_status) |
2325 | { |
2326 | int cnt = -1; |
2327 | int fd, size; |
2328 | struct stat statbuf; |
2329 | |
2330 | /* Validate file */ |
2331 | if (stat(fn, &statbuf) < 0) { |
2332 | status_line_bold("\"%s\" %s", fn, strerror(errno)); |
2333 | goto fi0; |
2334 | } |
2335 | if (!S_ISREG(statbuf.st_mode)) { |
2336 | // This is not a regular file |
2337 | status_line_bold("\"%s\" Not a regular file", fn); |
2338 | goto fi0; |
2339 | } |
2340 | if (p < text || p > end) { |
2341 | status_line_bold("Trying to insert file outside of memory"); |
2342 | goto fi0; |
2343 | } |
2344 | |
2345 | // read file to buffer |
2346 | fd = open(fn, O_RDONLY); |
2347 | if (fd < 0) { |
2348 | status_line_bold("\"%s\" %s", fn, strerror(errno)); |
2349 | goto fi0; |
2350 | } |
2351 | size = statbuf.st_size; |
2352 | p += text_hole_make(p, size); |
2353 | cnt = safe_read(fd, p, size); |
2354 | if (cnt < 0) { |
2355 | status_line_bold("\"%s\" %s", fn, strerror(errno)); |
2356 | p = text_hole_delete(p, p + size - 1); // un-do buffer insert |
2357 | } else if (cnt < size) { |
2358 | // There was a partial read, shrink unused space text[] |
2359 | p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert |
2360 | status_line_bold("can't read all of file \"%s\"", fn); |
2361 | } |
2362 | if (cnt >= size) |
2363 | file_modified++; |
2364 | close(fd); |
2365 | fi0: |
2366 | #if ENABLE_FEATURE_VI_READONLY |
2367 | if (update_ro_status |
2368 | && ((access(fn, W_OK) < 0) || |
2369 | /* root will always have access() |
2370 | * so we check fileperms too */ |
2371 | !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)) |
2372 | ) |
2373 | ) { |
2374 | SET_READONLY_FILE(readonly_mode); |
2375 | } |
2376 | #endif |
2377 | return cnt; |
2378 | } |
2379 | |
2380 | static int file_write(char *fn, char *first, char *last) |
2381 | { |
2382 | int fd, cnt, charcnt; |
2383 | |
2384 | if (fn == 0) { |
2385 | status_line_bold("No current filename"); |
2386 | return -2; |
2387 | } |
2388 | /* By popular request we do not open file with O_TRUNC, |
2389 | * but instead ftruncate() it _after_ successful write. |
2390 | * Might reduce amount of data lost on power fail etc. |
2391 | */ |
2392 | fd = open(fn, (O_WRONLY | O_CREAT), 0666); |
2393 | if (fd < 0) |
2394 | return -1; |
2395 | cnt = last - first + 1; |
2396 | charcnt = full_write(fd, first, cnt); |
2397 | ftruncate(fd, charcnt); |
2398 | if (charcnt == cnt) { |
2399 | // good write |
2400 | //file_modified = FALSE; |
2401 | } else { |
2402 | charcnt = 0; |
2403 | } |
2404 | close(fd); |
2405 | return charcnt; |
2406 | } |
2407 | |
2408 | //----- Terminal Drawing --------------------------------------- |
2409 | // The terminal is made up of 'rows' line of 'columns' columns. |
2410 | // classically this would be 24 x 80. |
2411 | // screen coordinates |
2412 | // 0,0 ... 0,79 |
2413 | // 1,0 ... 1,79 |
2414 | // . ... . |
2415 | // . ... . |
2416 | // 22,0 ... 22,79 |
2417 | // 23,0 ... 23,79 <- status line |
2418 | |
2419 | //----- Move the cursor to row x col (count from 0, not 1) ------- |
2420 | static void place_cursor(int row, int col, int optimize) |
2421 | { |
2422 | char cm1[sizeof(CMrc) + sizeof(int)*3 * 2]; |
2423 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR |
2424 | enum { |
2425 | SZ_UP = sizeof(CMup), |
2426 | SZ_DN = sizeof(CMdown), |
2427 | SEQ_SIZE = SZ_UP > SZ_DN ? SZ_UP : SZ_DN, |
2428 | }; |
2429 | char cm2[SEQ_SIZE * 5 + 32]; // bigger than worst case size |
2430 | #endif |
2431 | char *cm; |
2432 | |
2433 | if (row < 0) row = 0; |
2434 | if (row >= rows) row = rows - 1; |
2435 | if (col < 0) col = 0; |
2436 | if (col >= columns) col = columns - 1; |
2437 | |
2438 | //----- 1. Try the standard terminal ESC sequence |
2439 | sprintf(cm1, CMrc, row + 1, col + 1); |
2440 | cm = cm1; |
2441 | |
2442 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR |
2443 | if (optimize && col < 16) { |
2444 | char *screenp; |
2445 | int Rrow = last_row; |
2446 | int diff = Rrow - row; |
2447 | |
2448 | if (diff < -5 || diff > 5) |
2449 | goto skip; |
2450 | |
2451 | //----- find the minimum # of chars to move cursor ------------- |
2452 | //----- 2. Try moving with discreet chars (Newline, [back]space, ...) |
2453 | cm2[0] = '\0'; |
2454 | |
2455 | // move to the correct row |
2456 | while (row < Rrow) { |
2457 | // the cursor has to move up |
2458 | strcat(cm2, CMup); |
2459 | Rrow--; |
2460 | } |
2461 | while (row > Rrow) { |
2462 | // the cursor has to move down |
2463 | strcat(cm2, CMdown); |
2464 | Rrow++; |
2465 | } |
2466 | |
2467 | // now move to the correct column |
2468 | strcat(cm2, "\r"); // start at col 0 |
2469 | // just send out orignal source char to get to correct place |
2470 | screenp = &screen[row * columns]; // start of screen line |
2471 | strncat(cm2, screenp, col); |
2472 | |
2473 | // pick the shortest cursor motion to send out |
2474 | if (strlen(cm2) < strlen(cm)) { |
2475 | cm = cm2; |
2476 | } |
2477 | skip: ; |
2478 | } |
2479 | last_row = row; |
2480 | #endif /* FEATURE_VI_OPTIMIZE_CURSOR */ |
2481 | write1(cm); |
2482 | } |
2483 | |
2484 | //----- Erase from cursor to end of line ----------------------- |
2485 | static void clear_to_eol(void) |
2486 | { |
2487 | write1(Ceol); // Erase from cursor to end of line |
2488 | } |
2489 | |
2490 | static void go_bottom_and_clear_to_eol(void) |
2491 | { |
2492 | place_cursor(rows - 1, 0, FALSE); // go to bottom of screen |
2493 | clear_to_eol(); // erase to end of line |
2494 | } |
2495 | |
2496 | //----- Erase from cursor to end of screen ----------------------- |
2497 | static void clear_to_eos(void) |
2498 | { |
2499 | write1(Ceos); // Erase from cursor to end of screen |
2500 | } |
2501 | |
2502 | //----- Start standout mode ------------------------------------ |
2503 | static void standout_start(void) // send "start reverse video" sequence |
2504 | { |
2505 | write1(SOs); // Start reverse video mode |
2506 | } |
2507 | |
2508 | //----- End standout mode -------------------------------------- |
2509 | static void standout_end(void) // send "end reverse video" sequence |
2510 | { |
2511 | write1(SOn); // End reverse video mode |
2512 | } |
2513 | |
2514 | //----- Flash the screen -------------------------------------- |
2515 | static void flash(int h) |
2516 | { |
2517 | standout_start(); // send "start reverse video" sequence |
2518 | redraw(TRUE); |
2519 | mysleep(h); |
2520 | standout_end(); // send "end reverse video" sequence |
2521 | redraw(TRUE); |
2522 | } |
2523 | |
2524 | static void Indicate_Error(void) |
2525 | { |
2526 | #if ENABLE_FEATURE_VI_CRASHME |
2527 | if (crashme > 0) |
2528 | return; // generate a random command |
2529 | #endif |
2530 | if (!err_method) { |
2531 | write1(bell); // send out a bell character |
2532 | } else { |
2533 | flash(10); |
2534 | } |
2535 | } |
2536 | |
2537 | //----- Screen[] Routines -------------------------------------- |
2538 | //----- Erase the Screen[] memory ------------------------------ |
2539 | static void screen_erase(void) |
2540 | { |
2541 | memset(screen, ' ', screensize); // clear new screen |
2542 | } |
2543 | |
2544 | static int bufsum(char *buf, int count) |
2545 | { |
2546 | int sum = 0; |
2547 | char *e = buf + count; |
2548 | |
2549 | while (buf < e) |
2550 | sum += (unsigned char) *buf++; |
2551 | return sum; |
2552 | } |
2553 | |
2554 | //----- Draw the status line at bottom of the screen ------------- |
2555 | static void show_status_line(void) |
2556 | { |
2557 | int cnt = 0, cksum = 0; |
2558 | |
2559 | // either we already have an error or status message, or we |
2560 | // create one. |
2561 | if (!have_status_msg) { |
2562 | cnt = format_edit_status(); |
2563 | cksum = bufsum(status_buffer, cnt); |
2564 | } |
2565 | if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) { |
2566 | last_status_cksum = cksum; // remember if we have seen this line |
2567 | go_bottom_and_clear_to_eol(); |
2568 | write1(status_buffer); |
2569 | if (have_status_msg) { |
2570 | if (((int)strlen(status_buffer) - (have_status_msg - 1)) > |
2571 | (columns - 1) ) { |
2572 | have_status_msg = 0; |
2573 | Hit_Return(); |
2574 | } |
2575 | have_status_msg = 0; |
2576 | } |
2577 | place_cursor(crow, ccol, FALSE); // put cursor back in correct place |
2578 | } |
2579 | fflush_all(); |
2580 | } |
2581 | |
2582 | //----- format the status buffer, the bottom line of screen ------ |
2583 | // format status buffer, with STANDOUT mode |
2584 | static void status_line_bold(const char *format, ...) |
2585 | { |
2586 | va_list args; |
2587 | |
2588 | va_start(args, format); |
2589 | strcpy(status_buffer, SOs); // Terminal standout mode on |
2590 | vsprintf(status_buffer + sizeof(SOs)-1, format, args); |
2591 | strcat(status_buffer, SOn); // Terminal standout mode off |
2592 | va_end(args); |
2593 | |
2594 | have_status_msg = 1 + sizeof(SOs) + sizeof(SOn) - 2; |
2595 | } |
2596 | |
2597 | // format status buffer |
2598 | static void status_line(const char *format, ...) |
2599 | { |
2600 | va_list args; |
2601 | |
2602 | va_start(args, format); |
2603 | vsprintf(status_buffer, format, args); |
2604 | va_end(args); |
2605 | |
2606 | have_status_msg = 1; |
2607 | } |
2608 | |
2609 | // copy s to buf, convert unprintable |
2610 | static void print_literal(char *buf, const char *s) |
2611 | { |
2612 | char *d; |
2613 | unsigned char c; |
2614 | |
2615 | buf[0] = '\0'; |
2616 | if (!s[0]) |
2617 | s = "(NULL)"; |
2618 | |
2619 | d = buf; |
2620 | for (; *s; s++) { |
2621 | int c_is_no_print; |
2622 | |
2623 | c = *s; |
2624 | c_is_no_print = (c & 0x80) && !Isprint(c); |
2625 | if (c_is_no_print) { |
2626 | strcpy(d, SOn); |
2627 | d += sizeof(SOn)-1; |
2628 | c = '.'; |
2629 | } |
2630 | if (c < ' ' || c == 0x7f) { |
2631 | *d++ = '^'; |
2632 | c |= '@'; /* 0x40 */ |
2633 | if (c == 0x7f) |
2634 | c = '?'; |
2635 | } |
2636 | *d++ = c; |
2637 | *d = '\0'; |
2638 | if (c_is_no_print) { |
2639 | strcpy(d, SOs); |
2640 | d += sizeof(SOs)-1; |
2641 | } |
2642 | if (*s == '\n') { |
2643 | *d++ = '$'; |
2644 | *d = '\0'; |
2645 | } |
2646 | if (d - buf > MAX_INPUT_LEN - 10) // paranoia |
2647 | break; |
2648 | } |
2649 | } |
2650 | |
2651 | static void not_implemented(const char *s) |
2652 | { |
2653 | char buf[MAX_INPUT_LEN]; |
2654 | |
2655 | print_literal(buf, s); |
2656 | status_line_bold("\'%s\' is not implemented", buf); |
2657 | } |
2658 | |
2659 | // show file status on status line |
2660 | static int format_edit_status(void) |
2661 | { |
2662 | static const char cmd_mode_indicator[] ALIGN1 = "-IR-"; |
2663 | |
2664 | #define tot format_edit_status__tot |
2665 | |
2666 | int cur, percent, ret, trunc_at; |
2667 | |
2668 | // file_modified is now a counter rather than a flag. this |
2669 | // helps reduce the amount of line counting we need to do. |
2670 | // (this will cause a mis-reporting of modified status |
2671 | // once every MAXINT editing operations.) |
2672 | |
2673 | // it would be nice to do a similar optimization here -- if |
2674 | // we haven't done a motion that could have changed which line |
2675 | // we're on, then we shouldn't have to do this count_lines() |
2676 | cur = count_lines(text, dot); |
2677 | |
2678 | // reduce counting -- the total lines can't have |
2679 | // changed if we haven't done any edits. |
2680 | if (file_modified != last_file_modified) { |
2681 | tot = cur + count_lines(dot, end - 1) - 1; |
2682 | last_file_modified = file_modified; |
2683 | } |
2684 | |
2685 | // current line percent |
2686 | // ------------- ~~ ---------- |
2687 | // total lines 100 |
2688 | if (tot > 0) { |
2689 | percent = (100 * cur) / tot; |
2690 | } else { |
2691 | cur = tot = 0; |
2692 | percent = 100; |
2693 | } |
2694 | |
2695 | trunc_at = columns < STATUS_BUFFER_LEN-1 ? |
2696 | columns : STATUS_BUFFER_LEN-1; |
2697 | |
2698 | ret = snprintf(status_buffer, trunc_at+1, |
2699 | #if ENABLE_FEATURE_VI_READONLY |
2700 | "%c %s%s%s %d/%d %d%%", |
2701 | #else |
2702 | "%c %s%s %d/%d %d%%", |
2703 | #endif |
2704 | cmd_mode_indicator[cmd_mode & 3], |
2705 | (current_filename != NULL ? current_filename : "No file"), |
2706 | #if ENABLE_FEATURE_VI_READONLY |
2707 | (readonly_mode ? " [Readonly]" : ""), |
2708 | #endif |
2709 | (file_modified ? " [Modified]" : ""), |
2710 | cur, tot, percent); |
2711 | |
2712 | if (ret >= 0 && ret < trunc_at) |
2713 | return ret; /* it all fit */ |
2714 | |
2715 | return trunc_at; /* had to truncate */ |
2716 | #undef tot |
2717 | } |
2718 | |
2719 | //----- Force refresh of all Lines ----------------------------- |
2720 | static void redraw(int full_screen) |
2721 | { |
2722 | place_cursor(0, 0, FALSE); // put cursor in correct place |
2723 | clear_to_eos(); // tell terminal to erase display |
2724 | screen_erase(); // erase the internal screen buffer |
2725 | last_status_cksum = 0; // force status update |
2726 | refresh(full_screen); // this will redraw the entire display |
2727 | show_status_line(); |
2728 | } |
2729 | |
2730 | //----- Format a text[] line into a buffer --------------------- |
2731 | static char* format_line(char *src /*, int li*/) |
2732 | { |
2733 | unsigned char c; |
2734 | int co; |
2735 | int ofs = offset; |
2736 | char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2] |
2737 | |
2738 | c = '~'; // char in col 0 in non-existent lines is '~' |
2739 | co = 0; |
2740 | while (co < columns + tabstop) { |
2741 | // have we gone past the end? |
2742 | if (src < end) { |
2743 | c = *src++; |
2744 | if (c == '\n') |
2745 | break; |
2746 | if ((c & 0x80) && !Isprint(c)) { |
2747 | c = '.'; |
2748 | } |
2749 | if (c < ' ' || c == 0x7f) { |
2750 | if (c == '\t') { |
2751 | c = ' '; |
2752 | // co % 8 != 7 |
2753 | while ((co % tabstop) != (tabstop - 1)) { |
2754 | dest[co++] = c; |
2755 | } |
2756 | } else { |
2757 | dest[co++] = '^'; |
2758 | if (c == 0x7f) |
2759 | c = '?'; |
2760 | else |
2761 | c += '@'; // Ctrl-X -> 'X' |
2762 | } |
2763 | } |
2764 | } |
2765 | dest[co++] = c; |
2766 | // discard scrolled-off-to-the-left portion, |
2767 | // in tabstop-sized pieces |
2768 | if (ofs >= tabstop && co >= tabstop) { |
2769 | memmove(dest, dest + tabstop, co); |
2770 | co -= tabstop; |
2771 | ofs -= tabstop; |
2772 | } |
2773 | if (src >= end) |
2774 | break; |
2775 | } |
2776 | // check "short line, gigantic offset" case |
2777 | if (co < ofs) |
2778 | ofs = co; |
2779 | // discard last scrolled off part |
2780 | co -= ofs; |
2781 | dest += ofs; |
2782 | // fill the rest with spaces |
2783 | if (co < columns) |
2784 | memset(&dest[co], ' ', columns - co); |
2785 | return dest; |
2786 | } |
2787 | |
2788 | //----- Refresh the changed screen lines ----------------------- |
2789 | // Copy the source line from text[] into the buffer and note |
2790 | // if the current screenline is different from the new buffer. |
2791 | // If they differ then that line needs redrawing on the terminal. |
2792 | // |
2793 | static void refresh(int full_screen) |
2794 | { |
2795 | #define old_offset refresh__old_offset |
2796 | |
2797 | int li, changed; |
2798 | char *tp, *sp; // pointer into text[] and screen[] |
2799 | |
2800 | if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) { |
2801 | unsigned c = columns, r = rows; |
2802 | query_screen_dimensions(); |
2803 | full_screen |= (c - columns) | (r - rows); |
2804 | } |
2805 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot") |
2806 | tp = screenbegin; // index into text[] of top line |
2807 | |
2808 | // compare text[] to screen[] and mark screen[] lines that need updating |
2809 | for (li = 0; li < rows - 1; li++) { |
2810 | int cs, ce; // column start & end |
2811 | char *out_buf; |
2812 | // format current text line |
2813 | out_buf = format_line(tp /*, li*/); |
2814 | |
2815 | // skip to the end of the current text[] line |
2816 | if (tp < end) { |
2817 | char *t = memchr(tp, '\n', end - tp); |
2818 | if (!t) t = end - 1; |
2819 | tp = t + 1; |
2820 | } |
2821 | |
2822 | // see if there are any changes between vitual screen and out_buf |
2823 | changed = FALSE; // assume no change |
2824 | cs = 0; |
2825 | ce = columns - 1; |
2826 | sp = &screen[li * columns]; // start of screen line |
2827 | if (full_screen) { |
2828 | // force re-draw of every single column from 0 - columns-1 |
2829 | goto re0; |
2830 | } |
2831 | // compare newly formatted buffer with virtual screen |
2832 | // look forward for first difference between buf and screen |
2833 | for (; cs <= ce; cs++) { |
2834 | if (out_buf[cs] != sp[cs]) { |
2835 | changed = TRUE; // mark for redraw |
2836 | break; |
2837 | } |
2838 | } |
2839 | |
2840 | // look backward for last difference between out_buf and screen |
2841 | for (; ce >= cs; ce--) { |
2842 | if (out_buf[ce] != sp[ce]) { |
2843 | changed = TRUE; // mark for redraw |
2844 | break; |
2845 | } |
2846 | } |
2847 | // now, cs is index of first diff, and ce is index of last diff |
2848 | |
2849 | // if horz offset has changed, force a redraw |
2850 | if (offset != old_offset) { |
2851 | re0: |
2852 | changed = TRUE; |
2853 | } |
2854 | |
2855 | // make a sanity check of columns indexes |
2856 | if (cs < 0) cs = 0; |
2857 | if (ce > columns - 1) ce = columns - 1; |
2858 | if (cs > ce) { cs = 0; ce = columns - 1; } |
2859 | // is there a change between vitual screen and out_buf |
2860 | if (changed) { |
2861 | // copy changed part of buffer to virtual screen |
2862 | memcpy(sp+cs, out_buf+cs, ce-cs+1); |
2863 | |
2864 | // move cursor to column of first change |
2865 | //if (offset != old_offset) { |
2866 | // // place_cursor is still too stupid |
2867 | // // to handle offsets correctly |
2868 | // place_cursor(li, cs, FALSE); |
2869 | //} else { |
2870 | place_cursor(li, cs, TRUE); |
2871 | //} |
2872 | |
2873 | // write line out to terminal |
2874 | fwrite(&sp[cs], ce - cs + 1, 1, stdout); |
2875 | } |
2876 | } |
2877 | |
2878 | place_cursor(crow, ccol, TRUE); |
2879 | |
2880 | old_offset = offset; |
2881 | #undef old_offset |
2882 | } |
2883 | |
2884 | //--------------------------------------------------------------------- |
2885 | //----- the Ascii Chart ----------------------------------------------- |
2886 | // |
2887 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel |
2888 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si |
2889 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb |
2890 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us |
2891 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 ' |
2892 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f / |
2893 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7 |
2894 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ? |
2895 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G |
2896 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O |
2897 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W |
2898 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _ |
2899 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g |
2900 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o |
2901 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w |
2902 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del |
2903 | //--------------------------------------------------------------------- |
2904 | |
2905 | //----- Execute a Vi Command ----------------------------------- |
2906 | static void do_cmd(int c) |
2907 | { |
2908 | const char *msg = msg; // for compiler |
2909 | char *p, *q, *save_dot; |
2910 | char buf[12]; |
2911 | int dir; |
2912 | int cnt, i, j; |
2913 | int c1; |
2914 | |
2915 | // c1 = c; // quiet the compiler |
2916 | // cnt = yf = 0; // quiet the compiler |
2917 | // msg = p = q = save_dot = buf; // quiet the compiler |
2918 | memset(buf, '\0', 12); |
2919 | |
2920 | show_status_line(); |
2921 | |
2922 | /* if this is a cursor key, skip these checks */ |
2923 | switch (c) { |
2924 | case KEYCODE_UP: |
2925 | case KEYCODE_DOWN: |
2926 | case KEYCODE_LEFT: |
2927 | case KEYCODE_RIGHT: |
2928 | case KEYCODE_HOME: |
2929 | case KEYCODE_END: |
2930 | case KEYCODE_PAGEUP: |
2931 | case KEYCODE_PAGEDOWN: |
2932 | case KEYCODE_DELETE: |
2933 | goto key_cmd_mode; |
2934 | } |
2935 | |
2936 | if (cmd_mode == 2) { |
2937 | // flip-flop Insert/Replace mode |
2938 | if (c == KEYCODE_INSERT) |
2939 | goto dc_i; |
2940 | // we are 'R'eplacing the current *dot with new char |
2941 | if (*dot == '\n') { |
2942 | // don't Replace past E-o-l |
2943 | cmd_mode = 1; // convert to insert |
2944 | } else { |
2945 | if (1 <= c || Isprint(c)) { |
2946 | if (c != 27) |
2947 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char |
2948 | dot = char_insert(dot, c); // insert new char |
2949 | } |
2950 | goto dc1; |
2951 | } |
2952 | } |
2953 | if (cmd_mode == 1) { |
2954 | // hitting "Insert" twice means "R" replace mode |
2955 | if (c == KEYCODE_INSERT) goto dc5; |
2956 | // insert the char c at "dot" |
2957 | if (1 <= c || Isprint(c)) { |
2958 | dot = char_insert(dot, c); |
2959 | } |
2960 | goto dc1; |
2961 | } |
2962 | |
2963 | key_cmd_mode: |
2964 | switch (c) { |
2965 | //case 0x01: // soh |
2966 | //case 0x09: // ht |
2967 | //case 0x0b: // vt |
2968 | //case 0x0e: // so |
2969 | //case 0x0f: // si |
2970 | //case 0x10: // dle |
2971 | //case 0x11: // dc1 |
2972 | //case 0x13: // dc3 |
2973 | #if ENABLE_FEATURE_VI_CRASHME |
2974 | case 0x14: // dc4 ctrl-T |
2975 | crashme = (crashme == 0) ? 1 : 0; |
2976 | break; |
2977 | #endif |
2978 | //case 0x16: // syn |
2979 | //case 0x17: // etb |
2980 | //case 0x18: // can |
2981 | //case 0x1c: // fs |
2982 | //case 0x1d: // gs |
2983 | //case 0x1e: // rs |
2984 | //case 0x1f: // us |
2985 | //case '!': // !- |
2986 | //case '#': // #- |
2987 | //case '&': // &- |
2988 | //case '(': // (- |
2989 | //case ')': // )- |
2990 | //case '*': // *- |
2991 | //case '=': // =- |
2992 | //case '@': // @- |
2993 | //case 'F': // F- |
2994 | //case 'K': // K- |
2995 | //case 'Q': // Q- |
2996 | //case 'S': // S- |
2997 | //case 'T': // T- |
2998 | //case 'V': // V- |
2999 | //case '[': // [- |
3000 | //case '\\': // \- |
3001 | //case ']': // ]- |
3002 | //case '_': // _- |
3003 | //case '`': // `- |
3004 | //case 'u': // u- FIXME- there is no undo |
3005 | //case 'v': // v- |
3006 | default: // unrecognized command |
3007 | buf[0] = c; |
3008 | buf[1] = '\0'; |
3009 | not_implemented(buf); |
3010 | end_cmd_q(); // stop adding to q |
3011 | case 0x00: // nul- ignore |
3012 | break; |
3013 | case 2: // ctrl-B scroll up full screen |
3014 | case KEYCODE_PAGEUP: // Cursor Key Page Up |
3015 | dot_scroll(rows - 2, -1); |
3016 | break; |
3017 | case 4: // ctrl-D scroll down half screen |
3018 | dot_scroll((rows - 2) / 2, 1); |
3019 | break; |
3020 | case 5: // ctrl-E scroll down one line |
3021 | dot_scroll(1, 1); |
3022 | break; |
3023 | case 6: // ctrl-F scroll down full screen |
3024 | case KEYCODE_PAGEDOWN: // Cursor Key Page Down |
3025 | dot_scroll(rows - 2, 1); |
3026 | break; |
3027 | case 7: // ctrl-G show current status |
3028 | last_status_cksum = 0; // force status update |
3029 | break; |
3030 | case 'h': // h- move left |
3031 | case KEYCODE_LEFT: // cursor key Left |
3032 | case 8: // ctrl-H- move left (This may be ERASE char) |
3033 | case 0x7f: // DEL- move left (This may be ERASE char) |
3034 | if (--cmdcnt > 0) { |
3035 | do_cmd(c); |
3036 | } |
3037 | dot_left(); |
3038 | break; |
3039 | case 10: // Newline ^J |
3040 | case 'j': // j- goto next line, same col |
3041 | case KEYCODE_DOWN: // cursor key Down |
3042 | if (--cmdcnt > 0) { |
3043 | do_cmd(c); |
3044 | } |
3045 | dot_next(); // go to next B-o-l |
3046 | dot = move_to_col(dot, ccol + offset); // try stay in same col |
3047 | break; |
3048 | case 12: // ctrl-L force redraw whole screen |
3049 | case 18: // ctrl-R force redraw |
3050 | place_cursor(0, 0, FALSE); // put cursor in correct place |
3051 | clear_to_eos(); // tel terminal to erase display |
3052 | mysleep(10); |
3053 | screen_erase(); // erase the internal screen buffer |
3054 | last_status_cksum = 0; // force status update |
3055 | refresh(TRUE); // this will redraw the entire display |
3056 | break; |
3057 | case 13: // Carriage Return ^M |
3058 | case '+': // +- goto next line |
3059 | if (--cmdcnt > 0) { |
3060 | do_cmd(c); |
3061 | } |
3062 | dot_next(); |
3063 | dot_skip_over_ws(); |
3064 | break; |
3065 | case 21: // ctrl-U scroll up half screen |
3066 | dot_scroll((rows - 2) / 2, -1); |
3067 | break; |
3068 | case 25: // ctrl-Y scroll up one line |
3069 | dot_scroll(1, -1); |
3070 | break; |
3071 | case 27: // esc |
3072 | if (cmd_mode == 0) |
3073 | indicate_error(c); |
3074 | cmd_mode = 0; // stop insrting |
3075 | end_cmd_q(); |
3076 | last_status_cksum = 0; // force status update |
3077 | break; |
3078 | case ' ': // move right |
3079 | case 'l': // move right |
3080 | case KEYCODE_RIGHT: // Cursor Key Right |
3081 | if (--cmdcnt > 0) { |
3082 | do_cmd(c); |
3083 | } |
3084 | dot_right(); |
3085 | break; |
3086 | #if ENABLE_FEATURE_VI_YANKMARK |
3087 | case '"': // "- name a register to use for Delete/Yank |
3088 | c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower() |
3089 | if ((unsigned)c1 <= 25) { // a-z? |
3090 | YDreg = c1; |
3091 | } else { |
3092 | indicate_error(c); |
3093 | } |
3094 | break; |
3095 | case '\'': // '- goto a specific mark |
3096 | c1 = (get_one_char() | 0x20) - 'a'; |
3097 | if ((unsigned)c1 <= 25) { // a-z? |
3098 | // get the b-o-l |
3099 | q = mark[c1]; |
3100 | if (text <= q && q < end) { |
3101 | dot = q; |
3102 | dot_begin(); // go to B-o-l |
3103 | dot_skip_over_ws(); |
3104 | } |
3105 | } else if (c1 == '\'') { // goto previous context |
3106 | dot = swap_context(dot); // swap current and previous context |
3107 | dot_begin(); // go to B-o-l |
3108 | dot_skip_over_ws(); |
3109 | } else { |
3110 | indicate_error(c); |
3111 | } |
3112 | break; |
3113 | case 'm': // m- Mark a line |
3114 | // this is really stupid. If there are any inserts or deletes |
3115 | // between text[0] and dot then this mark will not point to the |
3116 | // correct location! It could be off by many lines! |
3117 | // Well..., at least its quick and dirty. |
3118 | c1 = (get_one_char() | 0x20) - 'a'; |
3119 | if ((unsigned)c1 <= 25) { // a-z? |
3120 | // remember the line |
3121 | mark[c1] = dot; |
3122 | } else { |
3123 | indicate_error(c); |
3124 | } |
3125 | break; |
3126 | case 'P': // P- Put register before |
3127 | case 'p': // p- put register after |
3128 | p = reg[YDreg]; |
3129 | if (p == NULL) { |
3130 | status_line_bold("Nothing in register %c", what_reg()); |
3131 | break; |
3132 | } |
3133 | // are we putting whole lines or strings |
3134 | if (strchr(p, '\n') != NULL) { |
3135 | if (c == 'P') { |
3136 | dot_begin(); // putting lines- Put above |
3137 | } |
3138 | if (c == 'p') { |
3139 | // are we putting after very last line? |
3140 | if (end_line(dot) == (end - 1)) { |
3141 | dot = end; // force dot to end of text[] |
3142 | } else { |
3143 | dot_next(); // next line, then put before |
3144 | } |
3145 | } |
3146 | } else { |
3147 | if (c == 'p') |
3148 | dot_right(); // move to right, can move to NL |
3149 | } |
3150 | string_insert(dot, p); // insert the string |
3151 | end_cmd_q(); // stop adding to q |
3152 | break; |
3153 | case 'U': // U- Undo; replace current line with original version |
3154 | if (reg[Ureg] != 0) { |
3155 | p = begin_line(dot); |
3156 | q = end_line(dot); |
3157 | p = text_hole_delete(p, q); // delete cur line |
3158 | p += string_insert(p, reg[Ureg]); // insert orig line |
3159 | dot = p; |
3160 | dot_skip_over_ws(); |
3161 | } |
3162 | break; |
3163 | #endif /* FEATURE_VI_YANKMARK */ |
3164 | case '$': // $- goto end of line |
3165 | case KEYCODE_END: // Cursor Key End |
3166 | if (--cmdcnt > 0) { |
3167 | dot_next(); |
3168 | do_cmd(c); |
3169 | } |
3170 | dot = end_line(dot); |
3171 | break; |
3172 | case '%': // %- find matching char of pair () [] {} |
3173 | for (q = dot; q < end && *q != '\n'; q++) { |
3174 | if (strchr("()[]{}", *q) != NULL) { |
3175 | // we found half of a pair |
3176 | p = find_pair(q, *q); |
3177 | if (p == NULL) { |
3178 | indicate_error(c); |
3179 | } else { |
3180 | dot = p; |
3181 | } |
3182 | break; |
3183 | } |
3184 | } |
3185 | if (*q == '\n') |
3186 | indicate_error(c); |
3187 | break; |
3188 | case 'f': // f- forward to a user specified char |
3189 | last_forward_char = get_one_char(); // get the search char |
3190 | // |
3191 | // dont separate these two commands. 'f' depends on ';' |
3192 | // |
3193 | //**** fall through to ... ';' |
3194 | case ';': // ;- look at rest of line for last forward char |
3195 | if (--cmdcnt > 0) { |
3196 | do_cmd(';'); |
3197 | } |
3198 | if (last_forward_char == 0) |
3199 | break; |
3200 | q = dot + 1; |
3201 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) { |
3202 | q++; |
3203 | } |
3204 | if (*q == last_forward_char) |
3205 | dot = q; |
3206 | break; |
3207 | case ',': // repeat latest 'f' in opposite direction |
3208 | if (--cmdcnt > 0) { |
3209 | do_cmd(','); |
3210 | } |
3211 | if (last_forward_char == 0) |
3212 | break; |
3213 | q = dot - 1; |
3214 | while (q >= text && *q != '\n' && *q != last_forward_char) { |
3215 | q--; |
3216 | } |
3217 | if (q >= text && *q == last_forward_char) |
3218 | dot = q; |
3219 | break; |
3220 | |
3221 | case '-': // -- goto prev line |
3222 | if (--cmdcnt > 0) { |
3223 | do_cmd(c); |
3224 | } |
3225 | dot_prev(); |
3226 | dot_skip_over_ws(); |
3227 | break; |
3228 | #if ENABLE_FEATURE_VI_DOT_CMD |
3229 | case '.': // .- repeat the last modifying command |
3230 | // Stuff the last_modifying_cmd back into stdin |
3231 | // and let it be re-executed. |
3232 | if (lmc_len > 0) { |
3233 | last_modifying_cmd[lmc_len] = 0; |
3234 | ioq = ioq_start = xstrdup(last_modifying_cmd); |
3235 | } |
3236 | break; |
3237 | #endif |
3238 | #if ENABLE_FEATURE_VI_SEARCH |
3239 | case '?': // /- search for a pattern |
3240 | case '/': // /- search for a pattern |
3241 | buf[0] = c; |
3242 | buf[1] = '\0'; |
3243 | q = get_input_line(buf); // get input line- use "status line" |
3244 | if (q[0] && !q[1]) { |
3245 | if (last_search_pattern[0]) |
3246 | last_search_pattern[0] = c; |
3247 | goto dc3; // if no pat re-use old pat |
3248 | } |
3249 | if (q[0]) { // strlen(q) > 1: new pat- save it and find |
3250 | // there is a new pat |
3251 | free(last_search_pattern); |
3252 | last_search_pattern = xstrdup(q); |
3253 | goto dc3; // now find the pattern |
3254 | } |
3255 | // user changed mind and erased the "/"- do nothing |
3256 | break; |
3257 | case 'N': // N- backward search for last pattern |
3258 | if (--cmdcnt > 0) { |
3259 | do_cmd(c); |
3260 | } |
3261 | dir = BACK; // assume BACKWARD search |
3262 | p = dot - 1; |
3263 | if (last_search_pattern[0] == '?') { |
3264 | dir = FORWARD; |
3265 | p = dot + 1; |
3266 | } |
3267 | goto dc4; // now search for pattern |
3268 | break; |
3269 | case 'n': // n- repeat search for last pattern |
3270 | // search rest of text[] starting at next char |
3271 | // if search fails return orignal "p" not the "p+1" address |
3272 | if (--cmdcnt > 0) { |
3273 | do_cmd(c); |
3274 | } |
3275 | dc3: |
3276 | dir = FORWARD; // assume FORWARD search |
3277 | p = dot + 1; |
3278 | if (last_search_pattern[0] == '?') { |
3279 | dir = BACK; |
3280 | p = dot - 1; |
3281 | } |
3282 | dc4: |
3283 | q = char_search(p, last_search_pattern + 1, dir, FULL); |
3284 | if (q != NULL) { |
3285 | dot = q; // good search, update "dot" |
3286 | msg = ""; |
3287 | goto dc2; |
3288 | } |
3289 | // no pattern found between "dot" and "end"- continue at top |
3290 | p = text; |
3291 | if (dir == BACK) { |
3292 | p = end - 1; |
3293 | } |
3294 | q = char_search(p, last_search_pattern + 1, dir, FULL); |
3295 | if (q != NULL) { // found something |
3296 | dot = q; // found new pattern- goto it |
3297 | msg = "search hit BOTTOM, continuing at TOP"; |
3298 | if (dir == BACK) { |
3299 | msg = "search hit TOP, continuing at BOTTOM"; |
3300 | } |
3301 | } else { |
3302 | msg = "Pattern not found"; |
3303 | } |
3304 | dc2: |
3305 | if (*msg) |
3306 | status_line_bold("%s", msg); |
3307 | break; |
3308 | case '{': // {- move backward paragraph |
3309 | q = char_search(dot, "\n\n", BACK, FULL); |
3310 | if (q != NULL) { // found blank line |
3311 | dot = next_line(q); // move to next blank line |
3312 | } |
3313 | break; |
3314 | case '}': // }- move forward paragraph |
3315 | q = char_search(dot, "\n\n", FORWARD, FULL); |
3316 | if (q != NULL) { // found blank line |
3317 | dot = next_line(q); // move to next blank line |
3318 | } |
3319 | break; |
3320 | #endif /* FEATURE_VI_SEARCH */ |
3321 | case '0': // 0- goto begining of line |
3322 | case '1': // 1- |
3323 | case '2': // 2- |
3324 | case '3': // 3- |
3325 | case '4': // 4- |
3326 | case '5': // 5- |
3327 | case '6': // 6- |
3328 | case '7': // 7- |
3329 | case '8': // 8- |
3330 | case '9': // 9- |
3331 | if (c == '0' && cmdcnt < 1) { |
3332 | dot_begin(); // this was a standalone zero |
3333 | } else { |
3334 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number |
3335 | } |
3336 | break; |
3337 | case ':': // :- the colon mode commands |
3338 | p = get_input_line(":"); // get input line- use "status line" |
3339 | #if ENABLE_FEATURE_VI_COLON |
3340 | colon(p); // execute the command |
3341 | #else |
3342 | if (*p == ':') |
3343 | p++; // move past the ':' |
3344 | cnt = strlen(p); |
3345 | if (cnt <= 0) |
3346 | break; |
3347 | if (strncmp(p, "quit", cnt) == 0 |
3348 | || strncmp(p, "q!", cnt) == 0 // delete lines |
3349 | ) { |
3350 | if (file_modified && p[1] != '!') { |
3351 | status_line_bold("No write since last change (:quit! overrides)"); |
3352 | } else { |
3353 | editing = 0; |
3354 | } |
3355 | } else if (strncmp(p, "write", cnt) == 0 |
3356 | || strncmp(p, "wq", cnt) == 0 |
3357 | || strncmp(p, "wn", cnt) == 0 |
3358 | || (p[0] == 'x' && !p[1]) |
3359 | ) { |
3360 | cnt = file_write(current_filename, text, end - 1); |
3361 | if (cnt < 0) { |
3362 | if (cnt == -1) |
3363 | status_line_bold("Write error: %s", strerror(errno)); |
3364 | } else { |
3365 | file_modified = 0; |
3366 | last_file_modified = -1; |
3367 | status_line("\"%s\" %dL, %dC", current_filename, count_lines(text, end - 1), cnt); |
3368 | if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n' |
3369 | || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N' |
3370 | ) { |
3371 | editing = 0; |
3372 | } |
3373 | } |
3374 | } else if (strncmp(p, "file", cnt) == 0) { |
3375 | last_status_cksum = 0; // force status update |
3376 | } else if (sscanf(p, "%d", &j) > 0) { |
3377 | dot = find_line(j); // go to line # j |
3378 | dot_skip_over_ws(); |
3379 | } else { // unrecognized cmd |
3380 | not_implemented(p); |
3381 | } |
3382 | #endif /* !FEATURE_VI_COLON */ |
3383 | break; |
3384 | case '<': // <- Left shift something |
3385 | case '>': // >- Right shift something |
3386 | cnt = count_lines(text, dot); // remember what line we are on |
3387 | c1 = get_one_char(); // get the type of thing to delete |
3388 | find_range(&p, &q, c1); |
3389 | yank_delete(p, q, 1, YANKONLY); // save copy before change |
3390 | p = begin_line(p); |
3391 | q = end_line(q); |
3392 | i = count_lines(p, q); // # of lines we are shifting |
3393 | for ( ; i > 0; i--, p = next_line(p)) { |
3394 | if (c == '<') { |
3395 | // shift left- remove tab or 8 spaces |
3396 | if (*p == '\t') { |
3397 | // shrink buffer 1 char |
3398 | text_hole_delete(p, p); |
3399 | } else if (*p == ' ') { |
3400 | // we should be calculating columns, not just SPACE |
3401 | for (j = 0; *p == ' ' && j < tabstop; j++) { |
3402 | text_hole_delete(p, p); |
3403 | } |
3404 | } |
3405 | } else if (c == '>') { |
3406 | // shift right -- add tab or 8 spaces |
3407 | char_insert(p, '\t'); |
3408 | } |
3409 | } |
3410 | dot = find_line(cnt); // what line were we on |
3411 | dot_skip_over_ws(); |
3412 | end_cmd_q(); // stop adding to q |
3413 | break; |
3414 | case 'A': // A- append at e-o-l |
3415 | dot_end(); // go to e-o-l |
3416 | //**** fall through to ... 'a' |
3417 | case 'a': // a- append after current char |
3418 | if (*dot != '\n') |
3419 | dot++; |
3420 | goto dc_i; |
3421 | break; |
3422 | case 'B': // B- back a blank-delimited Word |
3423 | case 'E': // E- end of a blank-delimited word |
3424 | case 'W': // W- forward a blank-delimited word |
3425 | if (--cmdcnt > 0) { |
3426 | do_cmd(c); |
3427 | } |
3428 | dir = FORWARD; |
3429 | if (c == 'B') |
3430 | dir = BACK; |
3431 | if (c == 'W' || isspace(dot[dir])) { |
3432 | dot = skip_thing(dot, 1, dir, S_TO_WS); |
3433 | dot = skip_thing(dot, 2, dir, S_OVER_WS); |
3434 | } |
3435 | if (c != 'W') |
3436 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS); |
3437 | break; |
3438 | case 'C': // C- Change to e-o-l |
3439 | case 'D': // D- delete to e-o-l |
3440 | save_dot = dot; |
3441 | dot = dollar_line(dot); // move to before NL |
3442 | // copy text into a register and delete |
3443 | dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l |
3444 | if (c == 'C') |
3445 | goto dc_i; // start inserting |
3446 | #if ENABLE_FEATURE_VI_DOT_CMD |
3447 | if (c == 'D') |
3448 | end_cmd_q(); // stop adding to q |
3449 | #endif |
3450 | break; |
3451 | case 'g': // 'gg' goto a line number (vim) (default: very first line) |
3452 | c1 = get_one_char(); |
3453 | if (c1 != 'g') { |
3454 | buf[0] = 'g'; |
3455 | buf[1] = c1; // TODO: if Unicode? |
3456 | buf[2] = '\0'; |
3457 | not_implemented(buf); |
3458 | break; |
3459 | } |
3460 | if (cmdcnt == 0) |
3461 | cmdcnt = 1; |
3462 | /* fall through */ |
3463 | case 'G': // G- goto to a line number (default= E-O-F) |
3464 | dot = end - 1; // assume E-O-F |
3465 | if (cmdcnt > 0) { |
3466 | dot = find_line(cmdcnt); // what line is #cmdcnt |
3467 | } |
3468 | dot_skip_over_ws(); |
3469 | break; |
3470 | case 'H': // H- goto top line on screen |
3471 | dot = screenbegin; |
3472 | if (cmdcnt > (rows - 1)) { |
3473 | cmdcnt = (rows - 1); |
3474 | } |
3475 | if (--cmdcnt > 0) { |
3476 | do_cmd('+'); |
3477 | } |
3478 | dot_skip_over_ws(); |
3479 | break; |
3480 | case 'I': // I- insert before first non-blank |
3481 | dot_begin(); // 0 |
3482 | dot_skip_over_ws(); |
3483 | //**** fall through to ... 'i' |
3484 | case 'i': // i- insert before current char |
3485 | case KEYCODE_INSERT: // Cursor Key Insert |
3486 | dc_i: |
3487 | cmd_mode = 1; // start insrting |
3488 | break; |
3489 | case 'J': // J- join current and next lines together |
3490 | if (--cmdcnt > 1) { |
3491 | do_cmd(c); |
3492 | } |
3493 | dot_end(); // move to NL |
3494 | if (dot < end - 1) { // make sure not last char in text[] |
3495 | *dot++ = ' '; // replace NL with space |
3496 | file_modified++; |
3497 | while (isblank(*dot)) { // delete leading WS |
3498 | dot_delete(); |
3499 | } |
3500 | } |
3501 | end_cmd_q(); // stop adding to q |
3502 | break; |
3503 | case 'L': // L- goto bottom line on screen |
3504 | dot = end_screen(); |
3505 | if (cmdcnt > (rows - 1)) { |
3506 | cmdcnt = (rows - 1); |
3507 | } |
3508 | if (--cmdcnt > 0) { |
3509 | do_cmd('-'); |
3510 | } |
3511 | dot_begin(); |
3512 | dot_skip_over_ws(); |
3513 | break; |
3514 | case 'M': // M- goto middle line on screen |
3515 | dot = screenbegin; |
3516 | for (cnt = 0; cnt < (rows-1) / 2; cnt++) |
3517 | dot = next_line(dot); |
3518 | break; |
3519 | case 'O': // O- open a empty line above |
3520 | // 0i\n ESC -i |
3521 | p = begin_line(dot); |
3522 | if (p[-1] == '\n') { |
3523 | dot_prev(); |
3524 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..." |
3525 | dot_end(); |
3526 | dot = char_insert(dot, '\n'); |
3527 | } else { |
3528 | dot_begin(); // 0 |
3529 | dot = char_insert(dot, '\n'); // i\n ESC |
3530 | dot_prev(); // - |
3531 | } |
3532 | goto dc_i; |
3533 | break; |
3534 | case 'R': // R- continuous Replace char |
3535 | dc5: |
3536 | cmd_mode = 2; |
3537 | break; |
3538 | case KEYCODE_DELETE: |
3539 | c = 'x'; |
3540 | // fall through |
3541 | case 'X': // X- delete char before dot |
3542 | case 'x': // x- delete the current char |
3543 | case 's': // s- substitute the current char |
3544 | if (--cmdcnt > 0) { |
3545 | do_cmd(c); |
3546 | } |
3547 | dir = 0; |
3548 | if (c == 'X') |
3549 | dir = -1; |
3550 | if (dot[dir] != '\n') { |
3551 | if (c == 'X') |
3552 | dot--; // delete prev char |
3553 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char |
3554 | } |
3555 | if (c == 's') |
3556 | goto dc_i; // start insrting |
3557 | end_cmd_q(); // stop adding to q |
3558 | break; |
3559 | case 'Z': // Z- if modified, {write}; exit |
3560 | // ZZ means to save file (if necessary), then exit |
3561 | c1 = get_one_char(); |
3562 | if (c1 != 'Z') { |
3563 | indicate_error(c); |
3564 | break; |
3565 | } |
3566 | if (file_modified) { |
3567 | if (ENABLE_FEATURE_VI_READONLY && readonly_mode) { |
3568 | status_line_bold("\"%s\" File is read only", current_filename); |
3569 | break; |
3570 | } |
3571 | cnt = file_write(current_filename, text, end - 1); |
3572 | if (cnt < 0) { |
3573 | if (cnt == -1) |
3574 | status_line_bold("Write error: %s", strerror(errno)); |
3575 | } else if (cnt == (end - 1 - text + 1)) { |
3576 | editing = 0; |
3577 | } |
3578 | } else { |
3579 | editing = 0; |
3580 | } |
3581 | break; |
3582 | case '^': // ^- move to first non-blank on line |
3583 | dot_begin(); |
3584 | dot_skip_over_ws(); |
3585 | break; |
3586 | case 'b': // b- back a word |
3587 | case 'e': // e- end of word |
3588 | if (--cmdcnt > 0) { |
3589 | do_cmd(c); |
3590 | } |
3591 | dir = FORWARD; |
3592 | if (c == 'b') |
3593 | dir = BACK; |
3594 | if ((dot + dir) < text || (dot + dir) > end - 1) |
3595 | break; |
3596 | dot += dir; |
3597 | if (isspace(*dot)) { |
3598 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS); |
3599 | } |
3600 | if (isalnum(*dot) || *dot == '_') { |
3601 | dot = skip_thing(dot, 1, dir, S_END_ALNUM); |
3602 | } else if (ispunct(*dot)) { |
3603 | dot = skip_thing(dot, 1, dir, S_END_PUNCT); |
3604 | } |
3605 | break; |
3606 | case 'c': // c- change something |
3607 | case 'd': // d- delete something |
3608 | #if ENABLE_FEATURE_VI_YANKMARK |
3609 | case 'y': // y- yank something |
3610 | case 'Y': // Y- Yank a line |
3611 | #endif |
3612 | { |
3613 | int yf, ml, whole = 0; |
3614 | yf = YANKDEL; // assume either "c" or "d" |
3615 | #if ENABLE_FEATURE_VI_YANKMARK |
3616 | if (c == 'y' || c == 'Y') |
3617 | yf = YANKONLY; |
3618 | #endif |
3619 | c1 = 'y'; |
3620 | if (c != 'Y') |
3621 | c1 = get_one_char(); // get the type of thing to delete |
3622 | // determine range, and whether it spans lines |
3623 | ml = find_range(&p, &q, c1); |
3624 | if (c1 == 27) { // ESC- user changed mind and wants out |
3625 | c = c1 = 27; // Escape- do nothing |
3626 | } else if (strchr("wW", c1)) { |
3627 | if (c == 'c') { |
3628 | // don't include trailing WS as part of word |
3629 | while (isblank(*q)) { |
3630 | if (q <= text || q[-1] == '\n') |
3631 | break; |
3632 | q--; |
3633 | } |
3634 | } |
3635 | dot = yank_delete(p, q, ml, yf); // delete word |
3636 | } else if (strchr("^0bBeEft%$ lh\b\177", c1)) { |
3637 | // partial line copy text into a register and delete |
3638 | dot = yank_delete(p, q, ml, yf); // delete word |
3639 | } else if (strchr("cdykjHL+-{}\r\n", c1)) { |
3640 | // whole line copy text into a register and delete |
3641 | dot = yank_delete(p, q, ml, yf); // delete lines |
3642 | whole = 1; |
3643 | } else { |
3644 | // could not recognize object |
3645 | c = c1 = 27; // error- |
3646 | ml = 0; |
3647 | indicate_error(c); |
3648 | } |
3649 | if (ml && whole) { |
3650 | if (c == 'c') { |
3651 | dot = char_insert(dot, '\n'); |
3652 | // on the last line of file don't move to prev line |
3653 | if (whole && dot != (end-1)) { |
3654 | dot_prev(); |
3655 | } |
3656 | } else if (c == 'd') { |
3657 | dot_begin(); |
3658 | dot_skip_over_ws(); |
3659 | } |
3660 | } |
3661 | if (c1 != 27) { |
3662 | // if CHANGING, not deleting, start inserting after the delete |
3663 | if (c == 'c') { |
3664 | strcpy(buf, "Change"); |
3665 | goto dc_i; // start inserting |
3666 | } |
3667 | if (c == 'd') { |
3668 | strcpy(buf, "Delete"); |
3669 | } |
3670 | #if ENABLE_FEATURE_VI_YANKMARK |
3671 | if (c == 'y' || c == 'Y') { |
3672 | strcpy(buf, "Yank"); |
3673 | } |
3674 | p = reg[YDreg]; |
3675 | q = p + strlen(p); |
3676 | for (cnt = 0; p <= q; p++) { |
3677 | if (*p == '\n') |
3678 | cnt++; |
3679 | } |
3680 | status_line("%s %d lines (%d chars) using [%c]", |
3681 | buf, cnt, strlen(reg[YDreg]), what_reg()); |
3682 | #endif |
3683 | end_cmd_q(); // stop adding to q |
3684 | } |
3685 | break; |
3686 | } |
3687 | case 'k': // k- goto prev line, same col |
3688 | case KEYCODE_UP: // cursor key Up |
3689 | if (--cmdcnt > 0) { |
3690 | do_cmd(c); |
3691 | } |
3692 | dot_prev(); |
3693 | dot = move_to_col(dot, ccol + offset); // try stay in same col |
3694 | break; |
3695 | case 'r': // r- replace the current char with user input |
3696 | c1 = get_one_char(); // get the replacement char |
3697 | if (*dot != '\n') { |
3698 | *dot = c1; |
3699 | file_modified++; |
3700 | } |
3701 | end_cmd_q(); // stop adding to q |
3702 | break; |
3703 | case 't': // t- move to char prior to next x |
3704 | last_forward_char = get_one_char(); |
3705 | do_cmd(';'); |
3706 | if (*dot == last_forward_char) |
3707 | dot_left(); |
3708 | last_forward_char = 0; |
3709 | break; |
3710 | case 'w': // w- forward a word |
3711 | if (--cmdcnt > 0) { |
3712 | do_cmd(c); |
3713 | } |
3714 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM |
3715 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM); |
3716 | } else if (ispunct(*dot)) { // we are on PUNCT |
3717 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT); |
3718 | } |
3719 | if (dot < end - 1) |
3720 | dot++; // move over word |
3721 | if (isspace(*dot)) { |
3722 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS); |
3723 | } |
3724 | break; |
3725 | case 'z': // z- |
3726 | c1 = get_one_char(); // get the replacement char |
3727 | cnt = 0; |
3728 | if (c1 == '.') |
3729 | cnt = (rows - 2) / 2; // put dot at center |
3730 | if (c1 == '-') |
3731 | cnt = rows - 2; // put dot at bottom |
3732 | screenbegin = begin_line(dot); // start dot at top |
3733 | dot_scroll(cnt, -1); |
3734 | break; |
3735 | case '|': // |- move to column "cmdcnt" |
3736 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column |
3737 | break; |
3738 | case '~': // ~- flip the case of letters a-z -> A-Z |
3739 | if (--cmdcnt > 0) { |
3740 | do_cmd(c); |
3741 | } |
3742 | if (islower(*dot)) { |
3743 | *dot = toupper(*dot); |
3744 | file_modified++; |
3745 | } else if (isupper(*dot)) { |
3746 | *dot = tolower(*dot); |
3747 | file_modified++; |
3748 | } |
3749 | dot_right(); |
3750 | end_cmd_q(); // stop adding to q |
3751 | break; |
3752 | //----- The Cursor and Function Keys ----------------------------- |
3753 | case KEYCODE_HOME: // Cursor Key Home |
3754 | dot_begin(); |
3755 | break; |
3756 | // The Fn keys could point to do_macro which could translate them |
3757 | #if 0 |
3758 | case KEYCODE_FUN1: // Function Key F1 |
3759 | case KEYCODE_FUN2: // Function Key F2 |
3760 | case KEYCODE_FUN3: // Function Key F3 |
3761 | case KEYCODE_FUN4: // Function Key F4 |
3762 | case KEYCODE_FUN5: // Function Key F5 |
3763 | case KEYCODE_FUN6: // Function Key F6 |
3764 | case KEYCODE_FUN7: // Function Key F7 |
3765 | case KEYCODE_FUN8: // Function Key F8 |
3766 | case KEYCODE_FUN9: // Function Key F9 |
3767 | case KEYCODE_FUN10: // Function Key F10 |
3768 | case KEYCODE_FUN11: // Function Key F11 |
3769 | case KEYCODE_FUN12: // Function Key F12 |
3770 | break; |
3771 | #endif |
3772 | } |
3773 | |
3774 | dc1: |
3775 | // if text[] just became empty, add back an empty line |
3776 | if (end == text) { |
3777 | char_insert(text, '\n'); // start empty buf with dummy line |
3778 | dot = text; |
3779 | } |
3780 | // it is OK for dot to exactly equal to end, otherwise check dot validity |
3781 | if (dot != end) { |
3782 | dot = bound_dot(dot); // make sure "dot" is valid |
3783 | } |
3784 | #if ENABLE_FEATURE_VI_YANKMARK |
3785 | check_context(c); // update the current context |
3786 | #endif |
3787 | |
3788 | if (!isdigit(c)) |
3789 | cmdcnt = 0; // cmd was not a number, reset cmdcnt |
3790 | cnt = dot - begin_line(dot); |
3791 | // Try to stay off of the Newline |
3792 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0) |
3793 | dot--; |
3794 | } |
3795 | |
3796 | /* NB! the CRASHME code is unmaintained, and doesn't currently build */ |
3797 | #if ENABLE_FEATURE_VI_CRASHME |
3798 | static int totalcmds = 0; |
3799 | static int Mp = 85; // Movement command Probability |
3800 | static int Np = 90; // Non-movement command Probability |
3801 | static int Dp = 96; // Delete command Probability |
3802 | static int Ip = 97; // Insert command Probability |
3803 | static int Yp = 98; // Yank command Probability |
3804 | static int Pp = 99; // Put command Probability |
3805 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0; |
3806 | static const char chars[20] = "\t012345 abcdABCD-=.$"; |
3807 | static const char *const words[20] = { |
3808 | "this", "is", "a", "test", |
3809 | "broadcast", "the", "emergency", "of", |
3810 | "system", "quick", "brown", "fox", |
3811 | "jumped", "over", "lazy", "dogs", |
3812 | "back", "January", "Febuary", "March" |
3813 | }; |
3814 | static const char *const lines[20] = { |
3815 | "You should have received a copy of the GNU General Public License\n", |
3816 | "char c, cm, *cmd, *cmd1;\n", |
3817 | "generate a command by percentages\n", |
3818 | "Numbers may be typed as a prefix to some commands.\n", |
3819 | "Quit, discarding changes!\n", |
3820 | "Forced write, if permission originally not valid.\n", |
3821 | "In general, any ex or ed command (such as substitute or delete).\n", |
3822 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", |
3823 | "Please get w/ me and I will go over it with you.\n", |
3824 | "The following is a list of scheduled, committed changes.\n", |
3825 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", |
3826 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", |
3827 | "Any question about transactions please contact Sterling Huxley.\n", |
3828 | "I will try to get back to you by Friday, December 31.\n", |
3829 | "This Change will be implemented on Friday.\n", |
3830 | "Let me know if you have problems accessing this;\n", |
3831 | "Sterling Huxley recently added you to the access list.\n", |
3832 | "Would you like to go to lunch?\n", |
3833 | "The last command will be automatically run.\n", |
3834 | "This is too much english for a computer geek.\n", |
3835 | }; |
3836 | static char *multilines[20] = { |
3837 | "You should have received a copy of the GNU General Public License\n", |
3838 | "char c, cm, *cmd, *cmd1;\n", |
3839 | "generate a command by percentages\n", |
3840 | "Numbers may be typed as a prefix to some commands.\n", |
3841 | "Quit, discarding changes!\n", |
3842 | "Forced write, if permission originally not valid.\n", |
3843 | "In general, any ex or ed command (such as substitute or delete).\n", |
3844 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", |
3845 | "Please get w/ me and I will go over it with you.\n", |
3846 | "The following is a list of scheduled, committed changes.\n", |
3847 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", |
3848 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", |
3849 | "Any question about transactions please contact Sterling Huxley.\n", |
3850 | "I will try to get back to you by Friday, December 31.\n", |
3851 | "This Change will be implemented on Friday.\n", |
3852 | "Let me know if you have problems accessing this;\n", |
3853 | "Sterling Huxley recently added you to the access list.\n", |
3854 | "Would you like to go to lunch?\n", |
3855 | "The last command will be automatically run.\n", |
3856 | "This is too much english for a computer geek.\n", |
3857 | }; |
3858 | |
3859 | // create a random command to execute |
3860 | static void crash_dummy() |
3861 | { |
3862 | static int sleeptime; // how long to pause between commands |
3863 | char c, cm, *cmd, *cmd1; |
3864 | int i, cnt, thing, rbi, startrbi, percent; |
3865 | |
3866 | // "dot" movement commands |
3867 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL"; |
3868 | |
3869 | // is there already a command running? |
3870 | if (readbuffer[0] > 0) |
3871 | goto cd1; |
3872 | cd0: |
3873 | readbuffer[0] = 'X'; |
3874 | startrbi = rbi = 1; |
3875 | sleeptime = 0; // how long to pause between commands |
3876 | memset(readbuffer, '\0', sizeof(readbuffer)); |
3877 | // generate a command by percentages |
3878 | percent = (int) lrand48() % 100; // get a number from 0-99 |
3879 | if (percent < Mp) { // Movement commands |
3880 | // available commands |
3881 | cmd = cmd1; |
3882 | M++; |
3883 | } else if (percent < Np) { // non-movement commands |
3884 | cmd = "mz<>\'\""; // available commands |
3885 | N++; |
3886 | } else if (percent < Dp) { // Delete commands |
3887 | cmd = "dx"; // available commands |
3888 | D++; |
3889 | } else if (percent < Ip) { // Inset commands |
3890 | cmd = "iIaAsrJ"; // available commands |
3891 | I++; |
3892 | } else if (percent < Yp) { // Yank commands |
3893 | cmd = "yY"; // available commands |
3894 | Y++; |
3895 | } else if (percent < Pp) { // Put commands |
3896 | cmd = "pP"; // available commands |
3897 | P++; |
3898 | } else { |
3899 | // We do not know how to handle this command, try again |
3900 | U++; |
3901 | goto cd0; |
3902 | } |
3903 | // randomly pick one of the available cmds from "cmd[]" |
3904 | i = (int) lrand48() % strlen(cmd); |
3905 | cm = cmd[i]; |
3906 | if (strchr(":\024", cm)) |
3907 | goto cd0; // dont allow colon or ctrl-T commands |
3908 | readbuffer[rbi++] = cm; // put cmd into input buffer |
3909 | |
3910 | // now we have the command- |
3911 | // there are 1, 2, and multi char commands |
3912 | // find out which and generate the rest of command as necessary |
3913 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands |
3914 | cmd1 = " \n\r0$^-+wWeEbBhjklHL"; |
3915 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[] |
3916 | cmd1 = "abcdefghijklmnopqrstuvwxyz"; |
3917 | } |
3918 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command |
3919 | c = cmd1[thing]; |
3920 | readbuffer[rbi++] = c; // add movement to input buffer |
3921 | } |
3922 | if (strchr("iIaAsc", cm)) { // multi-char commands |
3923 | if (cm == 'c') { |
3924 | // change some thing |
3925 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command |
3926 | c = cmd1[thing]; |
3927 | readbuffer[rbi++] = c; // add movement to input buffer |
3928 | } |
3929 | thing = (int) lrand48() % 4; // what thing to insert |
3930 | cnt = (int) lrand48() % 10; // how many to insert |
3931 | for (i = 0; i < cnt; i++) { |
3932 | if (thing == 0) { // insert chars |
3933 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))]; |
3934 | } else if (thing == 1) { // insert words |
3935 | strcat(readbuffer, words[(int) lrand48() % 20]); |
3936 | strcat(readbuffer, " "); |
3937 | sleeptime = 0; // how fast to type |
3938 | } else if (thing == 2) { // insert lines |
3939 | strcat(readbuffer, lines[(int) lrand48() % 20]); |
3940 | sleeptime = 0; // how fast to type |
3941 | } else { // insert multi-lines |
3942 | strcat(readbuffer, multilines[(int) lrand48() % 20]); |
3943 | sleeptime = 0; // how fast to type |
3944 | } |
3945 | } |
3946 | strcat(readbuffer, "\033"); |
3947 | } |
3948 | readbuffer[0] = strlen(readbuffer + 1); |
3949 | cd1: |
3950 | totalcmds++; |
3951 | if (sleeptime > 0) |
3952 | mysleep(sleeptime); // sleep 1/100 sec |
3953 | } |
3954 | |
3955 | // test to see if there are any errors |
3956 | static void crash_test() |
3957 | { |
3958 | static time_t oldtim; |
3959 | |
3960 | time_t tim; |
3961 | char d[2], msg[80]; |
3962 | |
3963 | msg[0] = '\0'; |
3964 | if (end < text) { |
3965 | strcat(msg, "end<text "); |
3966 | } |
3967 | if (end > textend) { |
3968 | strcat(msg, "end>textend "); |
3969 | } |
3970 | if (dot < text) { |
3971 | strcat(msg, "dot<text "); |
3972 | } |
3973 | if (dot > end) { |
3974 | strcat(msg, "dot>end "); |
3975 | } |
3976 | if (screenbegin < text) { |
3977 | strcat(msg, "screenbegin<text "); |
3978 | } |
3979 | if (screenbegin > end - 1) { |
3980 | strcat(msg, "screenbegin>end-1 "); |
3981 | } |
3982 | |
3983 | if (msg[0]) { |
3984 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s", |
3985 | totalcmds, last_input_char, msg, SOs, SOn); |
3986 | fflush_all(); |
3987 | while (safe_read(STDIN_FILENO, d, 1) > 0) { |
3988 | if (d[0] == '\n' || d[0] == '\r') |
3989 | break; |
3990 | } |
3991 | } |
3992 | tim = time(NULL); |
3993 | if (tim >= (oldtim + 3)) { |
3994 | sprintf(status_buffer, |
3995 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d", |
3996 | totalcmds, M, N, I, D, Y, P, U, end - text + 1); |
3997 | oldtim = tim; |
3998 | } |
3999 | } |
4000 | #endif |